It's not official, but his mother seems to have put out a statement. Not sure how accurate this is, but people seem to be thinking it is. Horrible, just all out horrible. And even though I haven't watched the show regularly for a very long time (just read spoilers and watch random clips), I always wanted him to return. Drew and Sam had chemistry, he was light years better than SBu, and he was talented.
Statement from Patricia Miller
EDIT: It is official, SOD has quoted it.