I didn't forget (it's a bit hard to after spending so many years working on a BSG related game, scouring the show for references.. we've all become experts on it through the whole process), but it's all a lot of speculation, really. The maneuver didn't destroy the CIC (though it did take some damage as we've seen), but the CIC damage was the least of the ship's problems at that point - it's structural integrity was beginning to falter, which is a bit harder to patch up than just reroute a couple of cables through the CIC. Later on when the chief talks about damage to the big G, he lists the atmo jump thing as one of the things that hasn't contributed to the ship's condition, but the fact remains that the Galactica was over 40 years old and about to be decommissioned at the start of the show. Then she got nuked, took tons of conventional fire, had Cylon agents activate bombs on the inside, and was still able to make the atmo jump, limp over to the end of the show, have boomer do the raptor ftl thing, took incredible amounts of fire, jumped one more time, and she was still flying (though in extremely bad shape) when they flew her into the Sun.
A smaller, well maintained battlestar like a Valk could probably do the maneuver without too much of a consequence, but again, there's no reason for them to do this. Physically possible doesn't equal to smart or useful
At any rate, Valkyrie's spoiler is definitely not an aerodynamic feature - that would be way too dumb (and wouldn't work).