Based on what we know now he probably wasn’t tortured or otherwise abused, so it seems likely that he cooperated with the enemy. After all, he sought them out.
Very likely, probably. But I don't think he had to brain power to show them how to trigger an IED with a cellphone.
The only, and I mean ONLY, thing in his defense on that one is the intercepted Taliban communications reported by Michael Hastings in that 2009 Rolling Stone article.
The Taliban seemed to think Bergdahl was a big fish based on the size of, extent of, and resources dedicated to the military search to recover him. That’s what saved his life. They thought we would play ball ... and eventually we did.
Americans caught by the Taliban star in snuff flix. So that he is still above ground and still possessing his noggin is purely suspicious. Also, captives are usually isolated and don’t end up speaking fluent Arabic to the point they forget their native tongue. That means he was working closely with Arabic speakers for some time. It is a stretch to say that indicates he was likely a turncoat?