Why don't you try a steroid enema? They are the only enemas that have ever worked for me. The only drawback is a tiny amount of steroid is absorbed into your body - and over a long period of time of using it, you could get some steroid side-effects.
I could never hold the liquid enema in but the foam one was much easier (Predfoam).
Abatacept Trial since Feb 2008 (Maintenance Period)
Back on Pred - 4mg - Steroid Dependent :-(
Actonel 35mg, EPA Fish Oils
Predfoam Enema - Had to stop as not allowed during trial
Asacol x 9, Lialda (Mezavant)
Remicade every 8 weeks (Stopped working)
Aloe Vera Lily of the Desert Juice Gave me the worst D !
Primadophilus Reuteri Probiotic