While Dell can be slimy. Don't try and fight it with an attorney. They have covered their assessment prior to deciding who goes and they will honor their end of the deal. I signed my package and got my check. The next month I got commission for my deals that were shipped out during my severance time. 3 months later I got a random commission for a deal I had booked but hadn't shipped yet when my final day went into effect and they decided to pay me on it anyway. Not sure who made that decision but thank you!
Anyways- they paid me 6 months of full pay and continued to pay my commissions. I had a new job within a week so it was sort of a blessing. My point being here that it's not worth fighting unless you have solid proof them firing you was illegal and WARN was violated.
It may also give them a reason to dig through every email, every DM, every expense report, and every deal you've worked to find a reason to have fired you.