Twitter can't pay its bills. The banks that funded the acquisition can't syndicate the debt. Revenue plummeted and shows no signs of improving. There aren't even any plans to improve revenue. Stock awards are worthless.
Yup. I assume he will do some sort of long-term vesting option that allows him to fire one-day before it vests and they lose everything.
Force the current employees to stay against their will or lose this package.
It is performance-based. So he will likely just do some really shortsighted rule that only gives programmers who write tons of crappy code the $$ and leaves everyone else out in the cold. And makes it very easy for them to lose all of the bonus too.