Sorry, I wonder if taking him in and having them feed him by IV with a ton of fluid and take him off all feed to get him completely cleared out would be beneficial. I would probably do another us to see if he's got a spot where he is getting hung up. It sounds like he feels better right after a tubing, so it makes me think the large bulus of fluid is pushing the gas and or feed through we're it's getting trapped. We had a really rough go with the guy that we had the displacement on... we were tubing him a 3 times a day to get the gas out and push fluids through.... in the end it paid off. The fact that this guy is coming back bright is a good sign, he still has fight in him.