Well, at least the timing isn't suspicious at all. Nope; not a bit.
He has been suing Boeing for years and had already been "testifying". It was becoming more and more obvious that the big payoff he was hoping for wasn't going to happen. He retired in 2017 on a disability for a job that required no physical work... His legal activity caused him to be under more scrutiny than most disability scammers with active thrill seeking lifestyles. Things were likely starting to come crashing down.