I've seen this done a few times. The difficulty is that it then leaves you open to similar charges when, for instance, an undead horde spawns in the middle of your multi-turn battle and you have to either pull out or become a hypocrite.
A realm accusing another of doing what it itself has done multiple times in recent history? Surely not!
![Tongue :P](https://forum.battlemaster.org/Smileys/default/tongue.gif)