Wow, your gut feeling is amazing. You had the feeling something big was going to happen and then the money shows up. That's pretty impressive. I agree you did the right thing about keeping the money. In the future, it's probably a good idea to avoid the multiple calls/texts to H though, especially as long as he is unresponsive and ignoring you. I know you were curious about why he sent the money but you don't want to overpush the issue either. It's good that you let him know what you are doing with the money though, so you can just leave it at that. Hopefully, his giving you the money is a sign that he is just taking responsibilty for his role in supporting S, and as long as you continue to track and document everything, he'll have no way to use it to manipulate it against you, despite any possible motives. And next time (hopefully there's a next time), maybe just say thank you for the money (so he knows it didn't lost and stolen) and leave it at that. I would not continue to let him know that it makes you uneasy as they may deter him from making future payments.
It really is impossible to know his motives regarding commenting to your family. It could be as innocent as he is ignorant to the fact that your family does not like him and thinks they would actually like to hear from him still (I'm learning with my own H that some of these common sense things are just not common sense to them. I don't get it) to as sinister as he's using it as a control issue to remind you that he can still get to you, or it could be for some completely different reason. The truth is you really don't know. Easier to say than to do, I know, but do what it takes to not let it get to you or he will continue to have that control and power over you.
Me 27; H 28; S 2 Togeth 9; M 4 Sep 11/14/08 EA OW1 Sep 08 EA OW2 Mar 09 EA OW3 Jun 10