Did you discuss getting a perm ileo instead of a temp one? I had a permanent ileostomy while being diverted from my j-pouch. My surgeon spent 3 hours while in there lysing my adheasions/scar tissue. She did all this laparoscopic. I really didn't want a temp one as I had horrible problems too. Later on I did need to have my j-pouch removed as my pouch problems didn't go away. But shoot you don't have any of the problems I had. I take that back I had IPS too. I would ask if s/he is going to work on the obstruction/adhesions while in there.
I suggest you get a permanent ileostomy while you need it. Permanent doesn't mean you can never go back to using your j-pouch. I trusted everyone on here that told me the perm ileo was night and day different from the temp one and they were right.
I hope all works out