The weakness there is that Hetzel isn't adressing the cause...simply the degree of the effect.
In my view, eliminating mark to market accounting woukd have been a wise move. The default rate on subprime mortgages peaked at @ 20%...the aggregate of all mortgages was far lower, IIRC closer to 5-6%. That means at worse the underlying asset for mortgage paper traded institutionally was paying at worse 80%. When the market froze...banks were forced to write those assets down to nil because there was no market for them. Allowing them to carry an imputed value based onth einterest recieved would have kept their balance sheets far healthier and obviated the need for the government to step in and buy these supposedly "toxic" assets.