I think O'Mara probably correctly assumed that no FL judge would have the b***s to declare Zimmerman not guilty in a stand your ground hearing.
Z would then have had to proceed to trial anyway, with a loss chalked up against him already.
I could be wrong, but at this point I believe O'Mara did sufficiently well at trial that there is little chance Z will be convicted. Hung jury more likely.
Does the jury have a time limit this evening?