"the “substantial bonus” which would be paid to me was “thanks” for the critical role I played in starting the company." Based on situations I've seen before,

"the “substantial bonus” which would be paid to me was “thanks” for the critical role I played in starting the company." Based on situations I've seen before, I'm guessing this "bonus" was probably actually attached to some legalese that required signing that exempted the company from any wrongful termination legal action, etc. etc.