Obligation to help employer after layoff with severance
I am pretty sure I will be laid off in the next few weeks as a result of selling myself out a job. Long story short, I am selling my current project to another company that might not need my services. My current employer has already told me that once the sale is complete that I will be laid off with a severance package (~6 weeks). There are enough lingering items with the project that I can forsee my current company needing information/assistance from me from time to time over the next year. Do I have any obligation moral or otherwise to help them without being compensated for my time?
The company has a policy that it can't compensate employees for anything within six months of the lay off. The nice guy in me says I should help them because I don't want to burn any bridges and they were kind enough to give me a severance. The bitter guy in me says that they did not provide any incentive to me for selling myself out of job, that by laying me off they are telling me they no longer need my services and finally, that the severance pay is more of a payoff to keep from being sued etc by me (not that I would or have any basis to do so).
What do you think?