First of all, I think the numbers here are not correct at all. So I would not pay too much attention. 2.50 calls are odd, though.
The expirations are not mentioned in the same posts. Assuming it is the Jan calls at issue. The 2.50 are not selling for 11.80, they are selling for 14.20 to buy and 11.20 to sell (you might get a slightly better pric of course). The math in the post of 11:41 is not right, there is no 147,000 profit in buying calls.
Stock price is looking good, so that is a good sign for the stock (for today at least).