You should let it settle for a full week. The strike you got is just defensive.
Find a tight fiting CLOSE hide that will touch him on all sides when he's in it and put on on the hot side, one on the cool side. Don't drag him out. Don't peek. Don't prod. Don't handle at all. Leave him completely alone for a full week (from NOW), and when you do offer food make sure you're offering food the same width as the WIDEST part of your snake and that it's warmed up to 102 or so degrees (should feel warm to the touch).