Repeated BMs and pain afterwards

Hi, I'm a 33yo WM with Crohn's colitis for past 2 years.  Recently started Remicade which helps with consistency of stools (although they are narrowed), but I have a problem when I go.  I get severe anal pain in the tailbone area after stool or gas passes a certain spot, which causes 6-10 BMs to occur in rapid succession (within 15 minutes).  I will even have involuntary straining to try and squeeze stool out (kind of like vomiting "dry heaves" but from my bowels).  Resulting pain is so severe that I must take 1-2 hydrocodone to knock it out and even that takes 1-2 hours to work.  In the meantime I can't sit, work, or sleep.  I don't want to have surgery if I can help it - any other options for helping pain to subside more quickly, or better yet to get rid of it all together?  Stretches, OTC meds, foods, supplements?  

Currently on (per day) 4.8g Lialda, 30mg prednisone, 6mg Entocort, Rowasa x 1, Canasa x 2, Librax x 2.  Also on Remicade 5mg/kg per 8 weeks.