Something tells me there'll be a future episode dedicated to what happened, maybe in the form of Michael having a flashback or something. Whatever happened it can't have taken too long. I could have the chronology messed up here but wasn't it something like Michael goes missing, Datu gets kidnapped, Michael and co. break out Datu? That means Michael would've had to have been hurt, gotten out of trouble, gotten back to the tower, then went off to find Datu all in a very short period of time.