Likely covering. Seen some shenanigans on accumulators today, but they're mostly all over the place, but trending up. Says short covering to me, given circumstances.
Smart Shorts that did so in the 370-380s probably exiting ahead of earnings, taking profit. Just like smart longs (not me ) exited some of there positions at ATH, taking profit.
Not all shorts are dumb. They are just trying to make a profit. Yes, they are betting against the company/mission statement to an extent but really never thought the company would fold. They are traders.
Now, there are some shorts that want to drive the company out of business. These are the 'toxic' shorts some of which are paid by the 'evil empire' (oil/other OEMs)