It's been a few months since you checked last but - if it pins frequently, and earlier in the match than it should, it might be that the "TM" value for the form where the pinfall is set to begin (the ones marked w/ the L, P and F flags) is more than 1 frame in length.

that's the same problem with Barmian Stamp, El Es Culero, the Styles Clash and a few other moves. For some reason, any pinning move with the TM set above 1 for the pinning form becomes hard to kick out of.

I don't believe I upped the power much at all from the regular Moonsault Fall, I will check and tweak accordingly.

What are the stats of this move? Extremely powerful and gets a 3 count just about every time it's used passed mid match.