I'm not sure what a slurry is supposed to mean either. I'm going to suggest this again, that you find a different vet. Papain and pineapple aren't used anymore by very good experienced rabbit vets because they don't really work at dissolving hair blockages. That is a very old way of thinking to use that as a treatment for a blockage. Experienced rabbit vets know that a rabbit needs gut motility meds, metacam, simethicone, critical care for if the rabbit isn't eating, and that a rabbit should also be fed grass hay(if it will eat it), when a rabbit is having GI stasis problems. All these things that this vet is suggesting, aren't things that a good rabbit vet would suggest and give for your rabbit. The difference between a good rabbit vet and an unexperienced rabbit vet, is that an inexperienced rabbit vet may give you the wrong meds and possibly misdiagnose your rabbit. A good rabbit vet knows what to look for in rabbits,will be more likely to correctly diagnose your rabbit, and will give you the right instructions and meds to treat the problem. The fact that this vet diagnosed your rabbit with GI stasis in the start, was questionable. When a rabbit is pooping soft poops, it doesn't have GI stasis. GI stasis means that a rabbits digestive system has slowed down and the rabbit is either having very tiny poop because of it, or it has stopped pooping altogether. The fact that your rabbit was still pooping soft poops when you went in means that your rabbit didn't have stasis at that time. Your rabbit may have also had gas in his digestive system, but that isn't the same thing as stasis. And also, that this has been going on for several days, without being resolved, makes me feel that your rabbit's problem isn't being correctly diagnosed, which could be dangerous if there is an underlying health problem that first caused the soft poop, and is now causing the stasis and blockage. The blockage may not be hair, and if your rabbit isn't molting right now, it most likely isn't hair. A blockage is a dried out mass in the digestive system because the rabbits digestion has slowed down for some reason. It can be from having another painful health problem, it can be from eating gas producing veggies that cause your rabbit to stop eating and eventually the digestive system slows down and a blockage can occur, or from too many sugars and carbs in the diet, or not enough fiber in the diet, or from hair causing a slowdown in the gut, but it's not believed anymore that a hair mass itself, is the primary cause of blockages anymore. It's not the primary cause, but it can contribute to the problem. So with all these inconsistancies in diagnosis, and suggested and prescribed remedies, I really think it would be a very good idea to find and see a different vet. You need a vet that is specifically trained in exotic animals preferrably, and that has lots of experience with rabbits. Look on these lists or look in your phone book or online, and if you find one near you, call them and ask if they are an exotics vet, ask how experienced they are with rabbits and if they see a lot of rabbits. It can be the difference of your rabbit actually getting better, or it continuing to have more problems and possibly getting worse. Please read this explanation of ileus/gi stasis. It will help you understand what is causing the problem, and what it is your rabbit needs. Here is also some questions you can ask when finding a different vet.
http://www.bio.miami.edu/hare/ileus.html
http://www.rabbitsonline.net/f14/looking-rabbit-veterinarian-1862/
http://www.memphisveterinaryspecialists.com/
http://www.yelp.com/biz/animal-hospital-raleigh-bartlett-memphis
http://www.rabbitwisememphis.org/vets.htm
Memphis Veterinary looks like a good possibility, as well as Animal Hospital Raleigh Bartlett, but those where just a couple I could find through an internet search. You can also see if there is something in your phone book. But try and get your rabbit in today if at all possible. Explain that he has been sick for several days, and that it is getting worse.