If, as the OP put it "with all protections/spells/abs", I'd say revert;c fumble is worth a shot if he's exhausted his melee options and insists on trying SOMETHING against a build that he's obviously not having much luck with (presumably prepped) in the first place.

If what you got out of my response was "Use fumble as a first resort against any/all warriors", then you didn't interpret it the way I intended and I hope this post clarifies that for the OP and you.