Moska, there may be people or groups that have had their way with this stock, but it's not the puny little short colony that has attached itself to us like an unsightly barnacle.
I do agree that the short interest decreasing can be interpreted as a good sign. For example, if someone long hedged against disaster by selling short, covering that position would be indicative of a change of heart - i.e., "I no longer have to protect my downside, the company is well on its way." And, of course, it could be indicative of shorts that thought they were going to make a killing, having a change of heart based on the caliber of people POET has attracted lately.