Probably not. If you stop taking a steroid without tapering off of it then you could have a bit of steroid withdrawal symptoms. The other likely possibility is, you just weren't healed enough at 4ish months of 6 mg so you flared up again when you stopped taking the Entocort. It can take a lot of time to heal inflammation. Personally I was on Entocort for 7 months the first time I was on it a few years ago, and I was on it for 8 months this year. It took that long for my body to fully heal each time from the inflammation. So my advice is to be patient, give it more time.