It's probably the Acolytes healing/sancing the angel. I've seen it before, Warlocks call for help and the dawnies come running.

You as a "young" character would be hard pressed to outdo the damage a few hero healers can repair per round, especially if they've sanc'ed the angel and the warlocks have invoker shielded it. Best bet for you is to get a few elder PC's to go with you next time to occupy the priests that come calling.

-Falstaff