Well I do not hear this question from the press yet. But Wray took no action on this dude. Senator Grassley applied pressure and the Mara Lago fiasco has blown up in their face. There are probably many FBI agents that are appalled at what their agency and the DOJ has done. So, something else forced this action on Thibault! Thibault forced out could even have happened without Wray knowing or being involved as we don’t know. Wray cold also have prevented Thibault from being fired, but we do not know. Not until someone questions Wray will we have an answer from his lips. My personal belief is that Wray knows it all and his hand was forced and he instructed Thibault to retire as planned if the heat got to hot from honest agents in the FBI that are sick of this get Trump at any cost.
It would be my guess that he left the bureau before the Inspector General dug into his past as the IG has no power to compel testimony from a former employee. He probably didn’t want to lose his pension and decided to bail-out after he was called-out by Grassley. The problem for him is he has set himself up to be the fall-guy, intentionally or unintentionally, because he won’t be there to defend himself from internal finger-pointing at the FBI.