User blog:StrawberrySibuna/What happened to Mr. Winkler?

Ok, so I've been thinking about this all season, and I can't figure out... WHAT HAPPENED TO MR. WINKLER? I mean, seriously, did he die from his disease, or did he just leave because the teacher he was subing for came back? Does anyone have any theores? Those are mine, and I could really use some help.