I had a similar situation where I was the project lead. Due to irreconcilable differences, I tendered my resignation with a ton of lead time basically saying I

I had a similar situation where I was the project lead. Due to irreconcilable differences, I tendered my resignation with a ton of lead time basically saying I'd get the product out the door. Product management kept adding scope, both features and infrastructure improvements, to the point where my plenty of notice was not enough to actually ship and they asked me to stay a bit longer. I finally just left when my extended time ran out. I feel a great responsibility to deliver when and what I say I will. I, and you, should not take responsibility for delivering what other people say we will.