During a LFR Garrosh fight right before Y'Shaarj's Protection (where you get sucked up into the heart) I was in the middle of using the ability killing spree (rogue ability). Instead of being sucked into the heart phase it spit me back out into the main room and all of the adds were still there. I was able to attack them and kill them while the rest of the raid ran through the phase. I have noticed some pretty strange things when i cast killing spree but this one seemed worthy of posting here.
EDIT : The adds just sat there and didnt attack me.