Don’t know if The O could do replace him or not, but personally I don’t see BIDEN as being the problem here!!!!!
Its in Hillary and her Clintonoid followers best interest that Obama’s campaign hits the ground at hyperspeed velocity. The bigger the crash and the more collateral damage (Meaning the democrats lose one of both houses of congress!) the better for Hillary & company to come in and pick up the pieces. Dean would be discredited she & her minions would be given total control of the entire party apparatus. It would be years of swag for her & her crowd !