Appears he was kind of petty against them, by blocking them from the administrative accts and services they were running on, but at the same time they were accounts under his control, being the founder of the charitable organization, and the organization then didn't do the proper steps of delinking their operations from those systems not under their control.l, after they kicked him out.
For the fbi to get involved and search his home tells me this has little to do with what Powell did with his charitable organization but opened an opportunity for them to go on a fishing expedition inside his personal residence.
Powell is non-compliant and a threat to the status quo. Go Jesse!!