He established the Chakrabarti Inquiry The Forde report concluded that they basically ate themselves over the issue, so to answer your question rather than add to the downvotes yes he was a polarising leader who should have made a lot more of an effort unionising the party, but Labour as a party failed hard during that period a point where they were constantly handed big W’s by the cons. They made sure he knew he wasn’t a Labour leader so it’s not surprising he has no issue running against them as an indie.