Well if it was not a slip fall then one has to wonder why Wiegman  would lay down like that when he could have just crouched down  bending his legs while balancing himself still on both feet if he wanted to change his camera perspective to lower ground.

     This is exactly why it is vital to view the Entire Bell Film/Wiegman Snippet. No cropping, no chopping, no giffing. On the (R) we see a Bench. Directly Below that Bench are Steps. Directly Below those Steps is the Knoll Grass. Wiegman's legs/feet are on the very same level as that Knoll Grass. He is on that Knoll Grass. He is Not sprawled across the Steps. Wiegman is Facing (W) toward the bottom of the Zapruder Perch. Wiegman is running/stumbling (W) across the Top portion of the Knoll Grass.
     At some point, Wiegman has to arrive (W) of the street light pole to then be standing next to the Newman Family. From where we see Wiegman on the Bell Film, what route does he take to arrive at the bottom of the Knoll and stand next to the Newman Family? Is the claim being made here that from the point we see Wiegman on the Bell Film, he then ran diagonally across the Knoll in order to arrive at the bottom of the Knoll and stand next to the Newman Family? That route would be contrary to the route we see him taking on the Couch Film. Wiegman had to of run (W) across the upper portion of the Knoll grass, in the direction of the bottom of the Zapruder Perch, and then turned left and ran (S) down the Knoll. This is what we see Wiegman doing on the Couch Film. Running (S) DOWN the knoll, Wiegman was then (W) of the street light pole and standing alongside the Newman Family at the bottom of the Knoll.
     The old blurry Bell Film images were responsible for this old wives tale of Wiegman being sprawled across the steps as he filmed the Hester's. Technology has improved the Bell Film definition to the point that it is now clear that Wiegman was not sprawled across the steps. To the contrary, the Bell Film now clearly shows Wiegman to Not being physically on the steps in any manner.
     Some of you are shocked to discover that what you cavalierly accepted as being a fact, is nothing but a 62+ yr old JFK Assassination Urban Legend. You need to accept that Technology is solving this case as it disproves 1 JFK Assassination Urban Legend at a time.     

If they put everything in the report that was in the 26 volumes of testimony, the report would have been 26 volumes long and been pretty tedious for anyone wanting to read it. The 888-page report contained the WC's findings and specified the evidence that led them to those conclusions. They provided the 26 volumes of evidence for those who wanted to dive deeper.

I should add that WC apologists fail miserably when it comes to matching their three shots with the Zapruder film. For starters, they must ignore three shot reactions visible in the film because they only have three shots to use. The Zapruder film shows at least six reactions to gunfire, three of which are obviously wound reactions.

"Reactions to Six Shots in the Zapruder Film"

This article is a condensed version of chapter 5, "Too Many Shot Reactions in the Zapruder Film," in my book A Comforting Lie: The Myth That a Lone Gunman Killed President Kennedy.

WC apologists must ignore or lamely evade reactions that refute the single-bullet theory (SBT), such as the dramatic drop of Connally's right shoulder drop in Z238-242. To deal with the shoulder drop, they offer three lame contradictory explanations: the shoulder drop is an optical illusion, or the shoulder drop is a delayed reaction to the alleged Z221-224 SBT hit, or the shoulder drop actually starts in Z224. It is a tossup as to which explanation is the most implausible and unscientific.

WC apologists must also ignore or lamely evade the bullet that hit the grass near the manhole cover on Main Street. They offer three implausible answers to the evidence for the grass bullet: a piece of JFK's brain somehow flew over the limo's roll bar and windshield and then veered leftward and hit the grass; or, a fragment from the lone-gunman scenario's missed shot magically hit the grass and then skipped onward to hit the Tague curb spot; or, it was all just a big misunderstanding over a hole in tghe grass that was made before the shooting.

Dr. Josiah Thompson has offered a sync of the dictabelt's shots with the Zapruder film, and it is credible if you assume (1) that four shots were fired, (2) two bullets hit JFK's head from different directions, and (3) that the Zapruder is authentic. The second assumption is on very solid ground, since there is considerable evidence that JFK's head was hit twice.

Personally, as I've said, given the scientific evidence that the Zapruder film has been altered,

and given the probability that the dictabelt did not record all the shots that were fired, I see no need to spend time trying to sync the dictabelt with the Zapruder film, and the Zapruder cannot logically be used as evidence against the dictabelt (even if we assume the film is pristine).