It's almost tragic how "weak and uninformed" almost everyone who disagrees with you seems to be, even if they've spent 40 or more years deeply involved in JFKA lore. One would think there would be SOMEONE out there who could match wits with your devilishly clever insights and CurIoUs sPelliNG (or, rather, CAPitAlizaTion).
All I know is, Clyde Haygood signed about 50 copies of that photo over a period of years, ostensibly on the basis that it depicts him. Ditto for about 50 photos of him on the overpass. If you have conclusive evidence it is not Clyde, you will have to take this up with the Administrators of the Estate of Clyde A. Haygood, Deceased. Perhaps you can file a class action on behalf of all those who have been defrauded.
My point is simply that there are multiple photos that are unquestionably Clyde Haygood, and that the Real Haygood is, remarkably enough, a dead ringer for your One Glove Bogus Imposter Haygood With a Mystery Device in His Hand Guy.