RaspberrySwirl,
You can't treat this as a G.I. Stasis case because the flipflop can't be broken down with acids/gas medication/and fiber.
Make sure he stays hydrated and massage him whenever you can. Let him get his exercise if he's willing.
I know you've cleaned out the litterbox. Let us know about those poops.
You know how to reach me, and if you're reading this at 3 a.m., it's not to late to call.
Praying for little mon and you.
Love,
-Carolyn