GRIZZLY did not exploit any raid IDs in fact the only guild that had any issue with raid IDs was <NOPE> and it was on Onyxia. NOPE mistakenly went into Onyxia after the raid ID reset from a server crash thinking the lockout ended. Giving them the benefit of the doubt because it was 12 hours or so before the actual reset was supposed to happen. NOPE did the honorable thing, because it was a mistake on their part, and sat out an entire raid lockout voluntarily . No extra loot was farmed from raids. Almost every guild on this server streams and you can usually always find them on Twitch or Hitbox.
The raid lockout issue as been fixed as far as I'm aware and no longer resets upon server crash.
Now, about the GRIZZLY GM issue, as far as I can tell, they do not have any GMs in their guild, and even if they did have 1 GM, which is highly unlikely, 1 GM can't force other GMs to look the other way while they "exploit." GRIZZLY has had members banned just like Ridin Dirty and NOPE. Hell, they've even had members level 60 toons deleted from their account and they wont be restored.
This is a community driven server, there are GMs in guild, there are GMs that raid and PVP as is the case with every private server and it will continue to be the case for all private servers to come. The best thing you could ask for is GM transparency releasing GM logs each week but that is not up to us, but for the devs to decide.