Is there a way to tell the Exo to "pick up" the sentry turrets in the game? I accidentally put a turret in the wrong area of the map, and now it's blocking the only exit. Is there a command to move or delete turrets?

Update:
I finally figured it out. One has to hold down the Shift key to do a "force attack" on the turret to destroy it.

Yup, Shift attack is usefull too to aim better with area weapons (aiming the ground near target, not on).

I think this ought to have been featured more prominently in the tutorial mission. This opens up a lot of strategic possibilities.

There's also a note somewhere to use Control to turn the orientation of the weapon... not used often, mostly so far on the welding arc.