Have you checked with your tutors to see if you can resubmit any assignments to bump your grade up to the required MMM? My son was able to do this when he needed to get a DDD for a scholarship. Clearing will probably be an option, but it will be much less stress if you can get the grades.
Another option would be to start the sports coaching course, and then see if you can transfer across. Sports Coaching and Sports Science usually have the same core modules for the first year or two, so this may be possible, as long as you get good grades for your coursework once you are at university.