Banks aren't reselling many foreclosed homes

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Gee! Carolyn of the San Francisco Chronicle is a sweet lady. She is just so nice to point out a fact with a very conservative figure.
I read a lot of report. I have no exact figures of this so-called "ghost foreclosure"; but I guess Carolyn's number is too nice.
I has kept in my mind the fact banks' REO are piling up into its books as "assets." Almost all the big bankers don't like to release info about its REO holdings, except three bankers I know. One of them is Wells Fargo Bank.
No Wonder Wells Fargo has been shown its desire to play the game by the old rules. Under the old game, Wells Fargo has the possibility to become the Top one bank by its good and decent performance. Sure, others don't like it happen and would like to change the well-established rules by taking advantage of TARP with their pals help.
They thought we were too stupid to know the truth. But a lot of people have the insight to see through these smoke guns, such as this article: US Treasury Privatized Profits And Socialized Losses.
Sure, I read some reports telling us there are legal redtape such as courts is not cooperating to speed up foreclosure. Also, some said there were a massive layoff causing shortage of manpowers in banking system to meet the increasing REO pile up. Well, to me they are not incurable. Almost all the reports are just giving an excuses after an excuses.
Still it is a good question for me to ask: Besides those excuses, what makes them doing it this way? I mean what is the real core cause behind all of these. We can't cure a disease if we don't know the roots, am I right?