I would guess “no”. Bishops would be reluctant to kick one out for taking a controversial stand. The church could simply go after any pastor who performed one.
This is all tied to whether the state says you must perform them.
There would seem to be a point where controversy ends and abomination begins, though.
To date, none of the “gay marriage” states have said that religious ministers “must” perform them. Attempting to do that would really make the merde s’impact le propeller.