Well, I do feel for you, but at the same time you chose to go to a gi dr. that was not treating you for a year and a half. The new guy....that is probably what they do with new patients. If you were an established patient of his, you probably would get in sooner. The er dr. is jumping the gun.....you just don't do surgery (unless it is an emergency) on a crohns patient without first trying the meds. He probably shoiuldn't have let you go home. A few days of iv meds would have been good for you.
Do you have a pcp? I would ask him/her to prescribe you pred. to get you through until Sept. Or at least maybe the on call gi guy might have done that.....he could have talked all he wanted to about surgery, but that is your call not his. Hang in there!