I think you may be overreacting. All the ruling says is that warshrines give benefits to all
friendly warriors. I don't know about you, but normally I'd think that the warriors on opposite sides of the fight wouldn't be considered friendly. Although, since it's Chaos, they could be.
The real question is, if a tournament judge hears "But sir, he didn't make the swashbuckling move, he cheated!" which of the players deserves a warning?