Jesus, you mods fucked up with this April fools joke. I get it, you're trying to make the day fun, I don't blame your intention, but this was a misstep.

OP, this is a problem beyond our reckoning. This is something a trained professional needs to navigate. Both the trauma to him and the complication of both your autism diagnoses. You're not equipped to deal with this on your own, indeed most neurotypical people aren't equipped to deal with this on their own, they're just more easily fooled into thinking they are.

You're doing the right things.