Everything you are saying about what happened to you is mighty fantastical. The odds of something going down the way you have this situation in your mind are so slim that it is hard to even quantify the chances. Frankly, people just aren't interesting enough to go after them and spoof their ip to commit felonies with, no matter how annoying you might have been on a message board.
In my career of hearing stories like yours, I've gotten very jaded. I often find myself explaining to my clients that it doesn't really matter what the truth actually is, it really only matters what you can make it appear to be in the courtroom.
Do not put your faith in your state's computer forensic skills. If your fantastical scenario is true, you need to have a damn good lawyer, and some damn expensive computer forensics of your own performed on those computers after the state is done with them (and some damn fine expert witnesses).
Unfortunately though, it is much easier to believe that it was in fact you that did something stupid on your computer yourself, and that the purpose of this thread on this message board is actually a fishing expedition for ideas related to your defense. Like, hmmm, what can these Internet security/privacy people think up that are holes in Internet security that I could use to pin my crime on? Something somebody says is bound to sound good in court.
