Expunge is broken. Removing three negative effects with no cost while also getting resources back for doing so has absolutely no place in pvp. Add up the amount of damage that can be mitigated with this ability--such as removing the dot from claw, breath, and major fracture of a stamdk--and tell me that it's fair to be able to do this at no cost while also getting resources back from the same ability. With this specific example, you're removing a major penetration debuff and mitigating probably 15-20k incoming damage while getting back resources.
The fact that this ability might make it to the PTS in that state is just completely bizarre to me. Are the class developers that out of touch?