Federal criminal charges don't get thrown out. That is very rare. The way the laws are written the feds were going to win. Aaron was trying to do something that should be legal, but the feds were going to get their win. The problem is that what they report to the press and what they actually win on at court can vary widely, so Aaron was going to be ruined and he was going to serve hard time in prison. He shouldn't have killed himself though. He could have had a prosperous life after prison, but his public reputation was destroyed forever.