That's my girl!!! I had a huge grin on my face reading this one. Mages are not built to "mank", so in the situation you were in, you had no other play but to take over. Probably a good thing the archer bailed, since he might have been able to pull agro from you. Still, when a group knows what it's doing, you can knock down some pretty nasty situations without a stud fighter. Clerics FTW!!!
Oh, and you may want to think about carrying HP stones, even if you never use them. They've saved me a few times - not sure though why a cleric really needs 285 HP stones at L96, but hey, why not.