You are probably ok - this is the third time this year they have opened the scheme and it is likely to open again early next year.
Obviously no-one can tell you what to do - but my own personal opinion is that it may be beneficial to complete your degree so that you have something to fall back on in the unfortunate instance of losing your class 1 at some point in the future.
You could call OAT and talk to any of the training advisers there for more detailed information.
HTH
Phil.