I'm not going to answer your question other than to say, if you're broken, why would the CF want you - or why would you think you're a good candidate to get in. Get yourself better first.
On that note, shin spints usually develop from one of two reasons from my experience. First, crappy footware. Get yourself a new pair of running shoes and make sure they are ones that when you run in them they do not cause you pain. Usually, that means there is a problem with how the shoe and your foot are getting along.
Second, check how you run. Believe it or not, there are correct and incorrect ways to run. Instead of my explaining it for you here, just google proper running techniques and have a read.
If the problem is just shin splints, by changing your runners and learning to run properly the problem could correct itself within a couple of weeks making your question a non-issue.
If the problem is more severe or serious, than I can't imagine the CF wanting to bring you in while you're a medical liability (nor should they want you until you're well).