This is probably going to sound like a crazy idea, its more in the line of preventative, and I don't know if it will help, but here goes...

A few months back I got an Alexander Technique videotape at the library and they went over the proper way to form the body when sneezing. Now, I know sneezes can be random, but maybe it would help to try it... at least prevent some pain...if you can remember to do it before a sneeze.

The tape had lessons on it by Deborah Caplan.