Allies using exploit to gank?

[todono]

I have a 33 hunter, and I was on the zep from org to UC tonight. I was not pvp flagged. There was a group of about 5-6 lvl 60 pvp-flagged allies on the zep who promptly ganked any lowbie that got on, but most were not pvp-flagged so they couldn't do anything. However, as soon as the map cutscene was over and the zep was in tirisfal glades, EVERYONE was somehow pvp-flagged and the allies ganked the whole zepload.
Why would I become pvp-flagged when traveling on the zep from one horde territory to another? Isn't this an exploit, and thus bannable (or at least suspendable)? Any GM's have an opinion?

[ketchup]

Every horde know risk of zeppelin travel. Travel by water or land if safety #1.

[winfernal]

That's hillarious!

[Simonich]

The Sea is considered a contested territory, by passing it, you are passing contested territory, therefore you are flagged.