One more post, on one broken leg.

[JMadonna]

If he ...seized the flag on the staff... then it was a conscious act to lessen the impact of his drop to the stage. That makes sense. Anyone know how thick that staff was?

As I recall from Good's book people described the flag coming down. Nobody mentioned anything about the drapery. Consequently, I don't see how anyone could describe his spur hitting the drapery. Booth's body would have blocked it from sight and his drop would have been too fast for the naked eye to see.

Unless someone has evidence of the drapery having spur holes in it, I'd say it never happened.