my understanding is that while the shares are in escrow, they...

my understanding is that while the shares are in escrow, they cannot be traded or transferred and the owner just "sits on them" so to speak.

Once released, they could come on to the market and it all depends if these equites show up on the sell side.

From the ann on the 5th this month:

In accordance with Listing Rule 3.10A we advise that 81,976,476 fully paid
ordinary shares and 44,980,000 options over ordinary shares classified by ASX
as restricted securities are due to be released from escrow on 9 December 2012.
The Company will apply for quotation of these shares within 10 business days of
this date as required by Listing Rule 2.8.2.