Longs who held after FDA approval see Afrezza as a blockbuster. This is a slow launch without any PR or advertisement, and they haven't even manufactured enough Afrezza to meet any expectation of high volume. Thus, you have to wait for consumer advertisments and full launch. In the mean time, Afrezza is gaining traction, increasing scripts by factor of 50-100%.
Shorts on the other hand, was 70 million shares in the hole before FDA approval, so they hoped that Afrezza would get killed by the FDA. But it didn't, so now we have manipulation with 40+ more million shares used to manipulate price down. I think they dug themselves into their own graves.
The shorts attacked and we will see soon how many more shares they burned trying to control the price, from the last two weeks of trading. This worked well into SNY buying; they are getting a bargain compared to buyout price. In a few weeks, we will see what the shorts actually have been doing since Middle of May.