According to Tim's log entry on his site, the stock was sold (short) at $7.53, covered at $7.33. According to Tim's comments, $7.50 was an important level technically. The $7.33 price does not seem to belong to January 22 though; it's possible that he covered next day or that he covered on January 22 and next day, with average price being $7.33. It's interesting that speaking of volume, there is nothing special about January 22.