When off-tanks aren't needed to tank anything, usually on single-mob boss fights, they turn into DPS. We all know this. Assuming said off-tank is a protection warrior, we can assume they have Devastate. Most of the time, they will also have One-Handed Weapon Specialization - increasing the damage done while wielding a one-handed melee weapon by 10%.
Devastate is a pretty awesome DPS ability. Not quite as awesome as
Bloodthirst,
but it will do for us prot warrior who are forced...