Sign the letter, increase sales and make/exceed goal, get the stock options, then...............they will make cuts in the sales force due to CCI (Cost Cutting Initiative) and you will not be there when your options vest. Guess What!!!!!! You did all of the work to get the options, you are displaced, not there when the options vested, and YOU DON'T GET THEM!!!!!!!! ps, you have a non compete and cannot gert a job elsewhere.