Honestly, that’s pretty out of character for Michael Scott. For a character who otherwise repeatedly makes the same mistakes over and over again, to show even that tiny bit of insight is a pretty big plot twist that maybe he’s not completely the bumbling oaf he lets on.
I’m not saying he’s secretly a Machiavellian genius, but his stupid antics belie what seems to be a pretty high emotional IQ at times (in sales and management, at least).