I think an unstuck is a very good idea, however, it could be used to bypass a tribes defenses. You unstuck past the walls and poof, let the attack begin. This may have already been addressed, but I'm not sure.
Recommendation: Not really sure. Maybe have a radius around a tribes area that unstuck won't work. IMO, around tribal areas will mostly be safe from tight spots. However, in the rare event this happens, a guide can help out.
I'm not really sure how to fix this, but recommendations would be welcome.