The two Scorpions aren't repairable. I need to figure out exactly what conditions vehicles recovered from the field are repairable, because I had some misconceptions on that one. Next time I'm going to try immobilizing, and then leaving the vehicle for the end of the battle. Potentially risky, but getting more vehicles would be great.
The Crab is already fully repaired and ready to go, just needs a new pilot (eventually we'll get some of those). The Vindicator, on the other hand, is going to take probably a couple weeks to get back up and running.