BTSX/USD is ~44/1
Anyone putting in sell or short orders under 43btsx/bitUSD is discounting the bitUSD.
I think the problem is not that there are too many bitUSD shorts, but rather there is no demand for bitUSD. This is due to the fact that there is nothing to do with it but hold your bitUSD. Once there are more outlets for bitUSD and more liquidity within ALL the platform markets, the peg will tighten up.
The thing to remember is: if you bought bitUSD at a certain percentage discount, then selling it at a discount after you profited would be exactly the same as selling if the peg was true and the market moved the same directional percentages.
Also, don't put ridiculous bids/ask in the books. If your trade is a loss, get out of it. Don't put pie in the sky orders in at where you wish to get out "when it comes back around". Set trading rules. i.e. You will close a trade after it posts a 10% loss or a 10% gain. If you are trading, trade and be proactive. If you are in for the long haul, hold and react accordingly.