ob. disclaimer: I'm not a lawyer, this is not legal advice, if you want legal advice you should contact a labor attorney in San Francisco. Line up a paying gig

ob. disclaimer: I'm not a lawyer, this is not legal advice, if you want legal advice you should contact a labor attorney in San Francisco. Line up a paying gig, get it confirmed in writing (heck, start if you can since you're working on this "part time") and then resign. Do not get into it with the CEO over appropriateness of treating an employee or the product. Really, truly, do not do this. Do not give the CEO any room to argue with you, or to make a case against you. Just resign: you found a paying gig. You don't owe them any more explanation than that. Document everything. Do not sign any termination agreements, you're not an employee and I assume you didn't sign a contract. If you signed an NDA then verbally agree to abide by the NDA for a fixed period of time (make sure you have a printed copy of the NDA stashed away somewhere). Now, if you did sign a contract or employment agreement, then honestly the first thing you should do tomorrow is find a labor attorney and get some legal advice. This will cost money. This will cost less money than either the pain of continuing at this organization, or the potential litigation.