I would like to think the designers knew the community would find alternative ways to defeat oryx and other bosses in the raid then the one specific way they intended. Granted pushing the boss off the edge isn't not one of those ways. However planing when to eliminate certain targets seems like a completely legitimate strategy. Kudos to the ones who created these strategies. I would love to see more come out of the oryx fight. It will only give the developers better feedback for creating better raids in the future.