Epoxy cured at room temperatures can take weeks to fully cure. I wonder if the same would happen when the layup has fully cured?

I would not worry about it! I saw an interesting repair done here at work that has bearing on this.

One of our aircraft was in the high artic being towed by a back hoe (bucket removed and arms up) when the tow bar broke. The aircraft rolled foreward and the raydome crunched into the back hoe. The damage was mostly to the inside where the inside skin delaminated from the honey comb core. The repair was to remove successive layers of glass down to the core. This was done by cutting successivly smaller circles with an exacto knife and peeling each layer off. If this repair worked on a vaccume bagged oven cured layup. I'm not surprise that you could peel off a layer of glass on a relativly green layup.

Don't worry ... be happy!

Matthew