Any bipolar person of any type will tell you that mania, even hypomania, can be very, VERY seductive because it makes you, DRIVES YOU, to do dangerous, exciting, illegal things. And when that seduction takes over, there is little that can stop it. It makes you quit taking your medication so you can develop as high a mania as you possibly can so that you can ride as high as you can and have as much crazy "fun" as you can without thinking of the consequences. Most of us have done it more than once. It is only a matter of chance and personality that determines who decides for himself or herself when enough is enough and they will not let that seduction take over again.

I would simply not trust him. Not until at least a good year or more has passed. Endangering his own life is one thing. Endangering the life of a chid is a whole different ball game with a whole different set of rules.

Protect yourself and your family. Let him deal with his illness and be responsible for himself. And don't let him near your family for at least a year.