There were 15.41M shares short this morning. 4,655,677 shares were traded today.
Must admit that the manipulation is impressive (and I don't have a clue how it is accomplished - naked short selling?) but I think this is an indicator of a large short positions being reduced which is an overall positive. The only way to know will be to watch the number of shares short going forward.
Somebody who knows the trading business better than I can comment.