Do I send my stepson a Christmas card?

[bwassul]

I unfortunately separated from my wife in August, and we are proceeding with a divorce. I was pretty close to her 15 year-old son but have not been in contact with either since a couple weeks after I moved out. The divorce is not amicable, and I'd also had to do some separation planning behind their backs due to her temper. I know my wife has made some unfavorable (but incorrect) assumptions about my behavior that she has shared with him. I know this only because I was, for a time, occasionally looking at his Twitter page. A couple months ago, he posted that he'd found out what I'd done (per his mother - stealing money) and that I'd better not come anywhere near him. The posting was taken down a day later.

With Christmas approaching, I've thought about sending him a Christmas card and a little money, but I'm not quite sure it's the smart or right thing to do. Any thoughts?