I do not understand why you would want to cover someting like that up. (First of all you should never have posted this
Coming to the real point, you took a year off and you did not get any credits for the exchange program you did. But isnt it a great experience you can build your essays on? Accept this as a genuine failure which challenged you and what you learnt from it. It sounds like a good essay story for me. I have seen some essays which specifically asks for your biggest failure what you learnt from it etc. This could make a great story for that essay.
Of course, I am no one to judge you or your profile. I am merely suggesting.

















