Oldude, I agree with you and disagree with HuskyNan. Not just one big game, but a blowout big game; an out-of-conference big game against a (currently) #1 seeded opponent big game; on the opponent's home court in front of 18,000 people big game;
and in a nationally televised, College Game Day big game.
This is precisely the kind of big game that can/should/will impact seeding. To imply this win will not move the Huskies higher than their current #7 overall seed is simply incorrect for the criteria you stated. Will they move up to become one of the four #1 seeds? Probably not, but still possible. Other things need to fall into place.
Here's the bottom line: the selection committee has a bit of a "situation" on their hands given what just happened on national television surrounding their initial reveal. Presuming the Huskies win out the rest of their regular season games, either the committee moves UConn up to an overall #6, #5 or even #4 at the end of the month for the second reveal, or they risk being discredited in the eyes of everyone who follows WCBB.