YEAH, FRAG THAT CRUSADE!!!!

I too was set upon by the Pope-inator after defending my country from an English attack. Apparently, he doesn't like it when you rescue troops holed up in a castle. He promptly excomm'ed me and the Italians launched a crusade-parade in honor of the occasion. Luckily for me Tuscany wasn't exactly deep in enemy territory. Long story short, I got Tuscany, crusade immediately dissapeared. Then I wacked the pope with a rank 5 assassin before anybody else could launch a crusade again, and right away got religion again - excomm over. Recommunicated (if that's a word) even before another Pope was created.
The order of events there is the key, I think. Folks please correct me if I'm wrong on this, but if you wack the Pope ( a move that isn't required to kabosh a crusade), and the current crusade is still marching on you, then a new Pope is appointed, taking action against that crusade will incur another excommunication by the new Pope. Now I haven't seen that happen, but I'm guessing that would be the flow of events. Can anybody shine some light on that?
One thing I'm certain of, you squash that crusade and get recomm'ed, you'll see your king's influence rise a good deal. Being on the receiving end of a crusade was the best thing that happened to mine. He went from 5 to 8. That might also have something to do with taking two Italian provinces though.