Almost all founder agreements - especially one signed by Cringley who has a lot of experience - is going to have ways for the board to get rid of a founder. Either outright firing, or a buy-out or something.

Just because a founder, for example, doesn't mean you don't have to come into work because you're busy at home eating cheetos and playing xbox (which is definitely not what Cringley did, but an extreme example of why you'd want such a clause).