The one consolation about Grayson running in the first place is that he's going to be out of congress.
Yes, we need to take back our party from the Sanders wing.
"Sanders wing" never controlled the party, unless I'm missing something and Bernie is the current Democratic nominee.
The Sanders wing lobbied to take away the right for DNC reps to choose who to vote for in future presidential primaries. The sanders wing forced out our great former chair DWS. The sanders wing wrongly framed our great progressive nominee Hillary Clinton as corrupt corporate shill. Finally the Sanders wing is trying to defeat hard working establishment Democrats like DWS, Patrick Murphy, ect.