A swarm of interceptors converges on the Bridge, propelling plasma at its heat shield, its windows, and finally, its emergency atmospheric bubble, before it breaks through and begins coating the room. And that's how the second breach of the Bridge turned out so much better than the first.
Unfortunately, decompressing or even destroying the Bridge does not erase orders from the navigational systems linked to the engines.
Down in Engineering, Zerg use their unwieldy claws and the SCV pilot uses his much more suitable fingers to attempt an emergency shutdown of the reactor system. After a few minutes of feverish work, the rumbling of the engine builds, spikes, and suddenly, the ship shudders as the reactors power down at the very last second. The ship rumbles dangerously at the unexpected outage, but remains intact.
Congratulations, you've prevented the ship's escape, destroyed the Bridge crew, and secured Engineering. Next week, you can deal with the rest of the crew, and the colony below!
(Also, you can find out what Nargil's made of the landworm!)