Well, lo and behold, he announced to me yesterday afternoon that he was speaking to me again. Oh joy. He also explained that although I find fault with his methods, he's got the whole school thing under control and presented exhibits A and B (two A's on major tests he didn't study for). Grrr!!! (but phew!) I'm still frustrated that as he continues to show no effort, he continues to succeed. It's going to be much harder to learn good study habits in college than it is to just buckle down now. Believe me... I learned the hard way and I don't want that for him.
Since I felt a slight obligation to be the "mature" one, I accepted that lame attempt at an apology and kept my lecture fairly brief. A little Rocky Road and a hug (Who am I fooling? There was no active hugging on his part. Rather, he basically stood close enough to me, and held still just long enough, to allow himself to be hugged) sealed the deal and everyone went to bed happy last night.
Crisis averted, once again.