For all I know you're right. However, considering what accounts I've been reading about Seiseki Abe, I'm assuming there's something more to it than mere theatrics.
Accounts are fine, stories are great, but witnesses dont make good storytellers, especially in the aikido world (c'mon, we all know shioda sensei told some real doozies). Can you honestly say youve never seen anyone just take fake ukemi? Never seen anyone just fall down when nothing happened? We all want to believe amazing things are possible, but isnt it more likely that this is whats happening here?
Even with more martial techniques, do you really think its neccesary to do a breakfall on any technique other than koshi-waza?
(sorry ive been gone for a while!!)