I think the market is in quite a bit of troulbe at the moment. Let's say, the Feds cut rates. This would only confirm that there is a serious problem, and will get people thinking, perhaps the risks are indeed a lot greater than what they have been valued to be. Of course, if things turn out to be bullish again, we'll just run into the same problem a little later down the track as debt continue to increase. Then what? Cut rates again? Until the interest rate is zero?
Alternatively, they don't cut rates, people will think that the Feds don't know what they are doing, and since they are unwilling to bail out the large investors (e.g. hedge funds), they'll have sooner or later have no other choice but to de-risk their highly leveraged portfolio purely for survival.
So, either way, I think a crash is imminent. The question is not if, it's when.
The Fed has already confirmed that there are major problems by cutting the discount interest rate and this has all been factored into the market. The market is already betting on the Fed to cut the regular interest rate and when this is confirmed it should bring stability back into the market IMO as by cutting interest rates promotes economic growth and puts more liquidity into the market.
I wouldn't go as far as saying that they could hypothetically cut interest rates to zero even though i understand that you are being facetious. It's understandable fo interest rates to be cut a percentage over time though. Who said that rates need to be continuously cut anyway? What's to say that rates are cut and then put on hold once stability has been obtained?