The key problem with the whole thing isn't non-performing loans, they were sub-prime and non-conforming for a reason, after all.
The problem is how loans were bundled for sale to investors. Instead of keeping conforming loans together and the sub-primes together, they bundled all sorts of loans together to provide, in theory, balanced risk investment packages. Now, due to the intricacies of the market and the way loan receipts are separated from servicing there's no real way as an investor to tell how much actual "bad" debt you're holding until it falls out.
The big problem then is not the actual foreclosures, it's the investor uncertainty if they are currently, or going to be, holding the bag.
Investors who are shaky want to sell, but there's no one to buy with that much uncertainty.
These stabilization moves are designed to console investors that they aren't holding thin air. But since the receipts
by contract are what these bundles were valued at, anything securitized by them is now suspect as well.
I think it will work itself out without collapse. After all, in the current financial world, all everyone has to do is believe and clap real hard and the money fairy will come back to life.
As is typical, nothing being done has much to do with actually helping individual people (which is actually good, as any problems are their fault (in general)), it's about keeping the markets stable.