iserith
Magic Wordsmith
The only time I see a player trying to back out of something he or she has described as wanting to do is when the DC or consequences that I laid out are strikingly different than what the player had in mind. In this case, it's a mismatch of expectations and I think it's reasonable for the player to withdraw the action declaration. This is an exceedingly rare circumstance in my experience, given that I devote a lot of my effort to keeping everyone on the same page via the play loop.