Why is TMO allowed to raid stall?

[47shadesofgay]

For well over a year now TMO has been stalling raid encounters so that they get FTE on mobs while allowing for the maximum amount of time for their raid force to log-on.

They've been caught and punished more than any other guild for kiting mobs (their kiters usually attempt to claim ignorance), they invented the DA-tank Trak while people log in strategy, and lately they have been starting DT cycles (they claim this is accidental too) in an attempt to delay other guilds engages on CT.

I think it is pretty obvious to most on-lookers that they are regularly being out mobilized and a lot of their competed kills outside of VP seem to involve such stall tactics. I ask, why are these things allowed to occur? Kiting is obviously against raid rules, although very difficult to prove and therefore enforce, but how is DA tanking mobs and beginning DT cycles that slow other players down not a punishable offense?