Hillary! has NOT clinched the nomination! Neither Hillary! or Bernie have enough pledged delegates to win the nomination. BY RULE, superdelegates are NOT pledged and can change their mind at any time, without repercussion, right up until the vote.
If the superdelegates swing from Bernie to Hillary! then Bernie wins. Plain and simple. The powers of the Democrat Party will choose the winner, and that choice will be made at the convention - not before. If Hillary! stumbles bad, then Bernie will have a strong case for support by those superdelegates and we may end up with a Bern-v-Donald contest.
I think old Bernie should stay...have an ‘blast’ of a convention, take down the whole city of Philly and Hilly while your at it!!!