First things, the check was mailed back to you several days ago so you should have it in the next few days at the most.
The lack of communication after 11/28 is simply because he doesn't log on daily like many of us do. He mailed the check before you even sent your last communication to him, he just wasn't online to see your other messages. Prior to that, including a 2 week vacation in the middle, you were aware of and in communication with him. There was no mal-intent on the part of RedRanger02.
So, seeing that communications has been re-established and the money is in fact on it's way back to you, I would consider this problem resolved.