No. They're not. You don't get to screw around with other people's lives and continue to possess the title of "good guy". If they were good guys, you would be receiving tens of thousands of dollars for your difficulties, and such would have enough of a runway on that such that you wouldn't need to ask us for advice. Please do us all a favor and let us know who they are beyond "a YC startup" so that none of us find ourselves in your shoes.
As it stands, if you had one of the other offers you were interested in, let them know that the company that you had taken reneged, and that you would love to work with them. Hiring good engineers is hard (and expensive) enough that any decent company won't mind being your second choice.
No. They're not. You don't get to screw around with other people's lives and continue to possess the title of "good guy". If they were good guys, you would be receiving tens of thousands of dollars for your difficulties, and such would have enough of a runway on that such that you wouldn't need to ask us for advice. Please do us all a favor and let us know who they are beyond "a YC startup" so that none of us find ourselves in your shoes.
As it stands, if you had one of the other offers you were interested in, let them know that the company that you had taken reneged, and that you would love to work with them. Hiring good engineers is hard (and expensive) enough that any decent company won't mind being your second choice.