I listened to it late last night for the first time and could barely breath through it...so it'll need a few more listen to today.
I think they're all dead. The mechanical sound I took as the windmill failing, and Datu as he was dying was anguished to see this happening knowing that they failed. That ripping sound I took as happening to Datu, but it could have been Jay or Glen. Then I thought I heard the z'd running off?? Maybe not. I kept listening for any sounds that might indicate someone turning and to my ears didn't hear anything like that. I don't think there was enough time yet in that scene, but we still have to see the outcome of it all...and if any of them turn...which I'm betting will be Datu if any.