I haven't experience with that locality, but when any boa gets pissy the first thing I check is the temperature of the hot and cool sides, and the humidity. If the probe for the thermostat was shifted during the move, that could be causing the warm side to be too hot or too cold.
x2. And give him LOTS of privacy. Leave him alone, cover the enclosure, and wait a week before you try feeding him again. He's probably stressed from being in a new place.....