My boyfriend and I have 11 snakes and the only ones that we have taken out of their tank to feed are the ones that we have in with another snake. We feed most everyone in their tanks, but we do typically take their hides out so the rat can't run in there and hide (we live feed). Once the rat is eaten, we put the hide back in and they go chill for a few days.

I agree that they might just be stressed out. Keep in mind that BP can actually go off feed for a few months and not be affected. Give them some time to relax and try again.