Board Thread:Warhammer 40k General Discussion/@comment-203.134.114.240-20130706042929/@comment-3258762-20130716173805

Correction: D: Executed by god damn Gabriel "EpicRatio:LostPrimarch" Angelos

And they have stated that none of them were canon. The Canon ending was that Avitus was the traitor, and when they stopped the black legion, Kyras sent the Force Commander on a penance crusade for ignoring his commands, forced Tarkus to take the vow of silence and sent Thaddeus away with the Force Commander.