Now if this isn't the most absurd take I have seen in my years of hotseating. Greyjoy has already played and reached a decision on his own accord, it is not going against guidelines in the HS, none what-so-ever, if he seeks to engage in diplomacy and make deals with other players, he may do so and reap the consequences for his actions. Considering EVERYTHING is out of the open, and the entire thread is clogged now, it must go on. Having Greyjoy re-play will only put him at a serious disadvantage (Which you undoubtedly know) but more importantly its almost as if you are forcing a player once again into something against their own will, which is simply unacceptable. If we're following your own 'consensus' on RP guidelines, should the Lannisters and Greyjoys not have had peace to begin with? Due to bad history? Almost the same for every faction, which really is pushing it if that's your excuse, it really is.
Edit - Greyjoy's move has been known for almost four days. You had not protested once with his decision, not a word, so why the sudden change of heart? Little weird, no?
Very peculiar indeed. Why would anyone go against an advantage? Especially when Greyjoy's concerned with Tyrell, they have their own interests, but forcing them into something due to a quote you half-heard on the television series on the mentality of the Ironborn is absurd. I'm sure you're more than aware of how such an agreement was reached, and their own verdict among players was more than reasonable. If you're that unhappy with players decision that you submit to meddling in justified actions then there is
no point in continuing this hotseat.