I'm not convinced things are as set in stone as such pundits would have us believe. It takes almost 2000 delegates, 1991 I believe is the number to clinch the nomination on the first ballot.
Should Sanders not have that magic number it has to go to the 2nd ballot. Then all of those super delegates come into play and if/when they do them Bernie is toast. The super delegates will not allow Bernie to be the nominee.
In spite of that slim lead Klinton had the ONLY reason she beat Bernie was that super delegates got to vote on 1st ballot. This time around they have to wait for the 2nd.