Thanks to the DaystromInstitute subReddit for the thought, relating to "Cause and Effect"[TNG] in which decompression of the main shuttlebay allowed the ship to avoid a collision. Quoting myself from there:
The Enterprise-D should mass around 6.5 million tonnes. Even
assuming the shuttlebay takes up 10% of the saucer volume, a severe
overestimate, that's 383,000 cubic meters. The density of air is 0.1
kg/m3. So they blew out no more than 38,000 kilograms in the
hope of moving something that masses 171 times more and fast enough to
avoid an oncoming ship.
In car terms, that would be like tossing out a 20lb bag of sugar in
the hope of propelling the vehicle out of the way of an oncoming car.
Presumably, this trick only worked due to residual mass-lightening fields affecting the ship or something."
This seems confirmed by the motion of the ship which went directly forward instead of rotating around the center of mass. Those fields seem to allow for such oddities.