An anonymous first-hand account of the same debate is found here.
From that account:
In my estimation, Plantinga won hands down because Dennett savagely mocked Plantinga rather than taking him seriously. Plantinga focused on the argument, and Dennett engaged in ridicule. It is safe to say that Dennett only made himself look bad along with those few nasty naturalists that were snickering at Plantinga. The Christians engaged in no analogous behavior. More engagements like this will only expand the ranks of Christian philosophers and increase the pace of academic philosophy's desecularization.