Originally Posted by Shatteredtower
Up until now, Roy (nor any on his team) have mentioned the off-switch for teleport. Its use before that would seem contrived to anyone that didn't play games like D&D, since it is a contrivance. Still, once its established that the option exists and is available to the Order, its use is much easier to justify.
V has used Dimensional Anchor on multiple occasions. The only reason that Durkon didn't have it prepared is because V does, so they "optimized" by comparing spell slots and avoiding duplication, thus ensuring that they had a wider range of spells available.