Well I can tell you since I only do options the bid/ask price is far apart. Nobody wants to move their calls that cheap. I am into Mar $20 ones and the movement price is only a .01 but the bid asking is .05 apart. So people know if you want these calls you will pay for them.
Why be short then? Your logic makes little sense. If you think the price is moving higher you should cover and short when the price is too high. I agree that pressure will ensue but you are playing with fire if you are prepared to hold on to your short when others are forced to sell. You offer very bad investment advise.
Where is the selling going to come from? Unless the major holders turn sour on their investment, but there is no indication that's the case. Unless shorts can find a way to borrow more shares than the core holders can buy??? I don't see this turning out well for you,