I think the problem that you are getting yourself into is you decided you wanted to move into your friend's apartment for 2 months to try and make your sublease more attractive. I don't think the landlord has to agree to you breaking the lease 3 months early if you are not immediately relocating, but relocating 2 months down the road. I'd heartily encourage you to back out of the living arrangement with your friends, I think that would help alleviate the issues you are facing.
Yeah, that's certainly the problem. I feel terrible doing that to my friend's, though. And the company that owns the building doesn't know that I'm staying in the country for another two months. They just know that I will be moving out because of a job offer in another country.