I just watched a sorc solo 8 guys and the resource flag using streak, infinite/invis bat swarm and double exploding familiars.
If you are not exploiting (2 out of the 3 mechanics here) you aren't trying?
Get a hold of this *** ZOS. The last few weeks of 1.2 was amazing. 1.3 might aswell be the first month of the game where bats just wen crazy.
edit- did I say 8? Just watched the vid, more like 12...