Wolfster,
If what Matt defined substantial action to be on day two of the summit is what they want., it should be easy enough to word correctly. There are only two possible scenarios: either: 1.) bet, call.... or 2.) bet, raise.
If it is any two actions, involving at least one bettor, it could only be: 1.) check, bet....2.) bet, call....3.) bet, fold...or.....4.) bet, raise.....Of course, any three actions is substantial, also.
I don't agree with your statement when you talk of killing the hand because substantial action took place after the skipped player. I think we need to wait for the official rule before we debate this further. I would also not object to the dealer being considered as one of the persons, if they condone the OOT action.
I would like to address your questions about the cut-off and second from the cut-off, but I have a tough time following that description. How about, the number of players in the hand, who's bet (by seat #), in relation to the button. If I do understand you, I think that would be "premature dealing" as oppossed to "substantial action."
By the way, I actually like Thomas's rule. I always thought that any two actions is substantial. However, that is not the way it was worded.