Imo it should say destroyed if that is what the crew is doing, not abandon. To me abandon makes it seem like you can come back. If you use "detroyed by crew" that makes more sense.
Ok, then add a "dismounted" option like vehicles have. You can recrew vehicles sometimes, you should also be able to do with field guns imo.
Were on the same page here I'm just not as eloquent with getting my point across xD