Nightmaiden's contributed a few remarks of eloquence. ^.~
In this case, so long as no unapproved third-party programs were used to gain access to land ordinarily untouchable by the standard-issue Azerothian feet, it is simply considered a viable PvP strategy. The player can still be attacked by all ranged means, while other players can get to the same location using the methods the flag carrier has.
Let me know if you seek more answers! = D
10,000 days in the fire is long enough...