Hi, Mike
I've been giving your suggestion a little thought. I wonder if this would help?
Any player who bets or raises is entitled to a refund of the uncalled amount if his or her hand is fouled our ruled dead before it is called. This rule will not pertain to a prematurely "ditched hand" by the owner.Trying to find a way to word this to prevent a player from ditching his hand while bluffing.

What do you think?