Well here are your new charts. The big thing that stands out to me is as we were hitting all time highs shorts certainly started to pile back in. The big thing to notice is that our minor increase in shares shorted (~530k) amounted to quite a substantial increase in the cost to them to play at the 281.10 share price of $569 Mil. So I think that says a lot about their determination that the price would fall from that point by piling in half a billion dollars! This isn't your retail investors shorting here, this has GOT to be institutional driven, cause that is a boatload of cash.
One additional observation (for anyone trying to keep track here), the 281.10 post date (9/10/2014) was AFTER pulling back from the all time high, and AFTER Elon made his comments (both happened on 9/4/2014). But! It was BEFORE AJ released his note and said he agreed (that happened on 9/15).
So the thing to keep an eye on, will be if the short interest is relatively flat or decreases I think we can safely say they gave up (I am talking about less than 500k increase in shares would be what I would consider them giving up, 500k or more and they would still be in it to see the stock burn). If however we see more than 500k shares shorted by the time this next number is released, I would suggest that they are piling in again in earnest to drive the price down.
Unfortunately, all of this is delayed data, which really makes it hard to say what they are trying to do and predict where it might be going from here.
A note about the charts: I had to shift all my scales because we breached 275 which kinda threw everything off when I expanded to cover our new high price on the chart of $281.10. In order to keep a similar look on the merged charts, I had to change all the scales up by about 18% to account for the increase. It doesn't overlap the data with quite the same visual punch as previously on the key shift on the short data that happened in March, but it is close enough.