If he were in a psychiatric hospital the treatment wouldn't have been much different. They also use rubber rooms and cameras, if necessary.
Outside of those two options, I'm not sure what you are implying could/should have been done. Was the prosecutor supposed to follow Aaron around 24/7 and physically stop him from hurting himself?
I think the prosecution was simply supposed to not charge him at all because despite the fact that aaronsw's actions would have led to any other random computer geek being arrested with nary a second thought on HN, this computer geek is more deserving. After all, he's just trying to "do the right thing".
Hell, in fact the prosecutor should be ashamed of daring bring any charge against someone who only went out of his way to visit some other campus than his own, evade a 1-file-at-a-time control, evade an IP ban, evade a MAC ban, evade a Wifi ban, and hide his face while trespassing in an unlocked server room, where the only reason he even got caught at all was because he simply wouldn't give up. Next thing you know they'll probably start ticketing jaywalkers.
More simply: the ultimate fault may be (is) Aaron's, but that does not mean that it is "no one's fault but Aaron's" -- there is blame enough to go round.
Step back a bit.
They charges didn't even need to be pursued. What "good" was ever going to come of it in any possible situation where charges were pursued?
Please explain this one to me. I would love to see what you come up with. I can think of about a thousand reasons why it isn't.