True, but to overcome that lead, McCormick would need to get about 55% of that remaining vote to overcome the lead.
And if that happened, then I wonder if the Oz people would ask for another recount to confirm; not sure of the laws in PA on recounts.
Yep, that's the point. A 900-vote margin out of 10,000 yet-to-be counted votes doesn't seem all that much. But why, when the margin of the now-counted votes is a fraction of 1%, will McCormick suddenly start pulling 55%? While possible, yes, it is quite unlikely as a practical matter.