I also find Randy's acting to be quite funny. Every interview he says almost exactly the same thing and still manages to keep up a big smile


@Honza - I actually did a similar calculation to yours, but then I thought of two possibilities:
1) They might actually ramp up the team size now that the cat's out of the bag.
2) I think he meant that he estimated it would require another 2500+ number of man months at the point he took over the project (past tense)... looking at it that way, perhaps his opinion has changed in the mean time and no longer feels it requires quite as much as he originally believed.
3) I didn't actually think of this one, but you're right, he could have just miscalculated.