RBTA damaged by powerhead

[IluvHockey]

My RBTA got sucked up into my intake of my rio600 RVT. 1/4 of it tentacales were chewed up. The remaining tentacles look good and don't look stress. I owuld of thought it would go through shock of some sort, as sentitive as they are. I think the best thing to do is to take it out of my tank. But once it untangled itself it is anchoured to a really big piece of live rock that I can't take out. Any advice? I knew I should have placed a guard on the powerhead. I just didn't think it could get sucked up in the middle of the tank.