[Quads]

I would feel the same. BS!!!

Ask him how he would feel if he was playing the WSOP and they changed the rules 1/2 way through. Would that be fair? And if not, then why is it OK for him to do the same thing in his league?

That's a bullshit move to change the rules half way though. Likely the worst thing he could have done to the group.

Regardless of how you played, your strategy, etc. Rules of a league shouldn't change, unless by some issue which is required to keep the group together, and all players vote on it.