I just hope and pray like the rest that it is nothing serious and he needs just to rest and take care of his health.....that being said, with Tebow leaving and having to rebuild, not reload, it might be easier for someone to come in now and take over the program, to keep the Gators from having several down years, its possible, like you all have said, if Mullen, Whittingham or some other Meyer protege comes in, they may be able to continue the dynasty they were surely building.
I work in the Medical field as an MRI Tech, and while I have seen lots of arachnoid cysts, they usually don't create life threatening problems, but with the all the pressure that these coaches are under, I would not be surprised if it could cause other problems as well.
No matter what, I just hope Urban stays healthy, he has been a great asset to the SEC and we will miss him that is for sure. I feel for our Florida brothers and sisters, we know how hard it is to replace someone that has taken their team to the top, not a good feeling.
Get well soon Coach Meyer, we were hoping for many more Florida/Bama matchups, but as long as you are healthy, we will wait for the next head Gator to tangle with.