Well, there are some spoilers for recent events in Fables here:
A new enemy named Mr. Dark (who represents all the dark and evil characters, like the Boogey Man) literally destroyed Fabletown. The Farm was far enough away not to be destroyed, so the Fables are once again displaced and setting up camp with all the non-human Fables. Under the circumstances, Beast was not enforcing the law preventing Bigby from being at the Farm, but in the previous issue that confrontation finally arose. Turns out they were being affected by Mr. Dark, who is bringing out the nasty in everybody (mostly the Mundy population of New York).