The scuttling of the ETC Vena Siderum

Deep space salvaging is a dangerous yet uneventful enterprise.
By this point it has become routine for your crew: Launch in the mothership, hop into the boarding pod, fix up the derelict ship and crew it until the company can tug it home.

The Extrasolar Trading Craft "Vena Siderum" is the one your crew is going to board this time: medium size cargo vessel, about three decades old, enduing the long voyage from Alpha Centauri to Sol.
No sign of electronic activity, the crew is presumed dead.

But oh no who could have guessed there's a spooky monster on board. 
Your crew will have to prime the self destruct sequence to activate the escape pods and get out of there.

Can you help all three of them live through the experience?