He's not out of the woods yet, just better. My vet wants me to call her tomorrow or the next day and discuss this. She says the specialist may want to try another form of treatment before they try surgery. She told me there are more treatments out there now. I am just waiting until tomorrow or the next day to see what I am going to do. My vet said it wasn't a matter of IF he will block again, but WHEN. It could be years before he blocks again, or it could be a week. I'll let you guys know what's going to happen when I know myself.