Closing plants helps the stock. Lower cost structure from the negotiations happening now helps the stock. Bottom fishing after hours helps the stock (after hours) but that is not a valid indicator IMHO. Just a few of the many things that can contribute to changing the valuation.
Hard to tell if this is a bottom or a "dead cat bounce". Lots of bad news already figured into the price. It costs a lot less than it used to but the old saying "don't try to catch falling knives" has never been more in effect.
-Mark.