A lot of the Internet detectiving makes 0 sense whatsoever, or is people just feeling overly clever about the one conclusion they came to.
Before I start in, I would like to SICK BURN Doom for doing half-assed Internet detectivery and missing that the last portion of Mugg's blograge is directly lifted from Tigole's Everquest rants a la C'thunrage years ago. Step up the game, son.
The biggest evidence here is that they gave Boub 150MB of log files, and he's posting in support of them. This is the guy who sifted through all the Cata rumors and basically posted a totally accurate Blizzcon preview weeks beforehand, and runs the biggest WoW news site out there. No reason for him to stick his neck out unless he's pretty sure.
The "blurred chatlog so they must have been talking about cheating/Blizz must have gone through chatlogs and found them saying "HAHA WE ARE EXPLOITING" is fucking retarded. No one who's seriously trying to game an encounter with full knowledge of it is going to type it in fucking Blizzard chat.
The likeliest explanation is that the platform got tagged and respawned while the DPS was dogpiling a Valkyr on the way out, it happened a few more times. What are they going to do, stop raiding for 48 hours to wait for their GM ticket to be serviced? "Well, hey, none of the GMs we know are invisibly watching the fight right now have said anything for five attempts, so let's keep going."
"Well hey, might as well just cleave down LK and both Valkyrs."
"5 more attempts and they haven't said anything, let's just stop for 2 days and let some other guild beat the boss, we hate playing this game anyway ME 2 4 lyfe"
"Oh, cool, we all just got banned. Cool of anyone to say anything."