While I don't think this is the case here, it's super interesting that leaving in disgrace can be a valid financial exit strategy. The founder and (ex) CEO of a company is able to sell 100% of their stock without causing a panic, under the condition there is another story which justifies it.

Suppose you were in a position where you thought poorly of the long term viability of the company. Wouldn't engineering a fallout with* the board be ultimately prudent?

*"with" here could even mean "in collaboration with".