From what I have seen in the news, it don't look good. Down from a 52 week high of 49.00 to 8.00 and still class action lawsuits and a bankruptcy to face, not hard to figure out the answer to your "buy" question. Not sure how your medical is involved unless it is part of a pension.
I went through a bankruptcy with employer. We got our 401K after about 2 years. Rolled over to a IRA. I wouldn't think a defined pension plan will be unscathed. If your 401K is large enough I would seek out a good financial advisor.