Well, one reason why I think the table talk rules are kind of silly is because you can rephrase the question as:

"Hey guys, I'm able to cancel a treachery, but I'm out of spirit resources. Should I use Grima's action just in case we need to cancel that one really bad treachery?"

and be within the rules. Might as well just say A Test of Will.

Yes this table talk rule always was quite a dump....