I suspect if you drug-tested the guy....there’s more than weed in his system. But at this point, there’s probably zero interest in telling the rest of the story.
Agreed. If his mother’s report on the domestic incident was accurate enough about the rapid, extreme behavior shifts, it appears that there might have been another drug. It usually takes years for potheads to have trouble with anxiety and depression swings. Stimulants (coke, meth, MDMA, etc.) and depressants (after addiction) can get an addict into a rage much more quickly.