Like I said, I'd have to believe in the product/mission. I think what he will certainly deliver is a team of talented and hard working people with similar goals and ambitions.

I think this is what is going on at Twitter right now. He wants to rebuild the organization into his vision which is very different than the way Twitter was built when he acquired it. I'm guessing now that he's been there a few weeks he has a decent understanding of who the performers are and who really wants to be there and who doesn't. And I respect him for letting those that don't want to be there know that things are going to change, and it might not be for you, so here is 3 months severance - good luck.

This sends 2 messages. Firstly to those that do want to be there, they can trust that their teammates are equally driven and culturally compatible. Secondly, the culture is changing from one that was management heavy, fluffy, and focused on mission-uncritical tasks to one that is focused on building a great product and company.

To be fair, if they do get it right and the company IPOs again in a couple years, then everyone there will be paid handsomly.