pssst nilesgirl, Lois edited her post right after you posted (within the 5 minute edit window) to avoid double posting. You can see her edit notes in small print at the bottom of the post.
Michael doesn't look like he's been having a really fun time since he left in search of Walt. My guess is that he hasn't had the chance to actually see Walt yet, because if he was anywhere near Walt, I don't think he'd let them get separated again without one heck of a fight. Poor Michael - how terrifying for a parent.