This is an interesting idea, and I appreciate the contrarian view that a catastrophic crash is a buying opportunity.
I'm not sure who your suggestion is directed at. Who has fiat sitting on the sidelines at Gox? I don't think you're suggesting that people deposit dollars in their Gox accounts, and things have finally reached the point that I doubt anyone is doing so. Moving bitcoin onto Gox at the moment seems even crazier, since the huge price disparity makes that market a terrible place to sell BTC if you have any other choice.
If you really believe that Gox is insolvent, desperate and willing to manipulate the market to save themselves, then it seems to me that you are underestimating the power they have. The MtGox market is totally unregulated and opaque. They can do whatever they want with their order book. Even the best poker players know that they can't beat a cheater. The only reason I don't particularly think that such shenanigans are behind the current price action at Gox is that their ineptitude casts doubt on whether they're smart enough to cheat so effectively.
In addition, if solvency is really the problem, then I think that may be a good reason to keep your funds in "fiat". If Gox collapses, there will be legal action. There might be a shred of hope of getting some of your $$$ back, but the legal basis for recovering bitcoin is murky at best.
Good luck with your strategy, if you do decide to follow it. I'll be watching from afar.
