Look, Sanders is very much a Western-type of socialist - he talks the talk, but there’s no way he would ever actually walk the walk himself - personal sacrifice is something for you, not him. As much as the DNC has stabbed him in the back, he knows he can’t beat them and if he plays ball they’ll help him hold on to his Senate seat.
My read of Bernie is that bribes would not work with him—but threats, particularly directed at his family, would work.
I think Hillary threatened to kill all of them if he did not play ball.
That is why he is so determined to stay “on message”.
After hearing him this morning, he is bought and paid for. He simply wanted attention that he has never received. The last thing he will do is blow up the democratic party. All democrats eventually fall in line.