I was running crypts until I finally figured out that everyone has trouble with that first boss. I wish I knew that from the beginning because I wiped countless times on that big eye. However, that's beside the point. In crypts my tank would sometimes get mindcontroled. You may want to consider adding in "help" or whatever the conditional agrument is. In other words, when my pally becomes possessed, I want my moonkin to now be the "lead." Obviously I'd have to switch to the moonkin window, but without some conditional I believe the system would break down since the pally is still alive and exists.