Dharan, The reality is that no excuse is needed to wave someone. The game mechanics entirely allow it and so do the rules. Since there is nothing in the game mechanics or rules preventing it, the question really is "Why SHOULDN'T Havoc wave them."
The answer to that is because over time the community in this game have generally decided that it's more fair to only fight after both kingdoms have had long periods of uninterupted preparation to fight. Anything else is generally considered either vulturing or doubling. Some people tend to get blinded by this terminology and the now community mindset of what has now been established as "top kingdom code of honor."
I have never tried to promote blind enforcement of such things although I have tried to promote general "fair" play. The problem with blind definitions and rules is that they become easy to manipulate and abuse. This turns what was once a player created idea of fair play into weapon to do ridiculous things to try and gain advantages that would be clearly bad without such a twisted version of these player based rules.
Obviously being in and helping lead Absalom would have given me a prime position to try and get away with stuff like dodging any kingdom who could ever want to fight me by just initiating "hostiles" with weaker kingdoms any time a stronger one was about to initiate a fight with me. I have never once done this as a leader and I've shot down such notions internally countless times both in my kingdom and in Absalom. That is not to say others in Absalom haven't tried to do such things. Many have on many occasions. Often they got 'doubled' as a result of trying it and every time I've told them to not do stupid stuff like starting a hostile to run from an oncoming fight.
These unwritten, player made rules should be in place for one reason only and that is to improve play for all. I have never agreed witht he notion that kingdoms can abuse such "rules" to block all challengers from fighting them. In the days of fake wars it could be common for kingdoms to fake war, immediately after leaving the fake war, wave a target kingdom, and as soon as the hostile/war was done go right back into fake war to repeat. When is the kingdom doing that ever exposed to be waved themselves? Many of the kingdoms doing this would make a public outcry bout dishonorable play and being 2v1'd into their war if anyone even hit them into their fake war.
This bastardization and abuse of a so called player created honor code does not benefit the game or any of the players. Instead of trying to make definitions saying "double is always bad" and "vulture is always bad" and then having kingdoms manipulate these things to ensure no one can ever touch them without doing one of those things to them, we should instead focus on general fair play and intent.
Here's a partial list of "don't" guidelines I try and play by off the top of my head that should not be taken as hard rules to look for loopholes to abuse:
1) Don't treat a kingdom in a way that you wouldn't consider fair if they did it to you.
2) Don't team up and coordinate to take down stronger enemies that you couldn't beat on your own or that might be too costly to fight on your own.
3) Don't interfere in fights that shouldn't be interfered in. Sequence of events matters and so do the options and choices made by the potential target. The legitimacy of the fight also matters. This is open to interpretation, but see rule 1).
4) Don't break deals that you make.
5) Don't do stupid things to put yourself in a bad position by relying on these or any other player based rules for protection. Play smart and assume others won't follow these "rules."