I think the PI will get arrested for stealing them before the AG goes after Acorn for dumping them.
But dumping that kind of information is a felony in itself. First, they knew the AG was going to visit, so that is one felony, and the confidential info part is another.
I don't believe Jerry Brown would or could now (because the evidence is tainted in the chain of control ) use any of this stuff for a criminal investigation. But the lawsuits on this would be great.
Especially since it would wind up bursting quite a few corporate shells for other lawsuits if the stuff shows there was not any real difference between acorn tweedledee and acorn tweedledum.