He committed the Cardinal sin of posting an LA Times story about the plans the paper's new owner had for Freedom Communication properties. He was told it violated the paper's social media policy - even though he didn't provide any commentary.
http://www.poynter.org/latest-news/mediawire/177284/barrett-tryon-placed-on-leave-in-social-media-policy-dispute/
http://www.poynter.org/latest-news/mediawire/177284/barrett-tryon-placed-on-leave-in-social-media-policy-dispute/