Board Thread:Warhammer 40k General Discussion/@comment-26165786-20150304163255/@comment-6078851-20150419160403

i think it's mentioned in a novel that sanguinius didn't actually want to be warmaster as he felt there were others far more capable of the role. and in retrospect any loyal primarch would've been a better choice than horus :P

jonson's loyalty to emps was always solid, as mentioned in a multitude of sources, codex: dark angels being just one - before horus openly declared his intent he "ordered the most staunchly loyal legions, the ones he knew he could not corrupt, to distant war zones. so were the blood angels, ultramarines, and dark angels unable to counter horus' initial moves." and half his legion turning to chaos was the doing of luther who had grown to despise jonson and was a pawn of the gods, plus, most, if not all (barr luther), of those who turned traitor had no idea that chaos had any involvement in their rebellion.

although jonson has to shoulder a modicum of the blame - due to his lack of people skills he came across as kind of cold and possibly neglectful of those he commanded, and it was this that luther played upon to turn those astartes to his cause, and jonson didn't see the animosity being created against himself. like all primarchs jonson has his faults but his loyalty to emps was unfliching. as to what his state of mind will be upon waking and seeing that the imperium is pretty much a smoking ruin of what it was in his day, well... maybe his mind will snap and he'll go haring off in the rock towards the eye of terror :P i seriously doubt it, but it's not impossible.