any chance the 1.1 billion is built in already, page-14

Removing panic from the equation,
it is always possible as well, that buyer interest has been sought in order to establish value.
Once having done this, they can then determine the current LVR of the properties that the banks hold as security.

If the properties value above book value why would the banks compel them to sell anything?

Their loan ratio is reduced by virtue of the improved value of the asset....

This scenario is plausible if the dire consequences of the credit crunch ease.
Banks will continue to lend providing they are comfortable with the level of debt in relation to the value of the asset.