I have just the opposite problem with our LG residential refrigerator, it is leaning out at the top. I asked on Facebook, and maybe on here, how to fix it, but no one was ever able to answer the question. Ours vibrated outward during a long rough road trip, and actually tilted forward enough that only the door closing straps kept it from falling over. We pushed it back into place, but it has had a forward lean ever since. Since it works ok, I have just given up on fixing it. If I ever get up by the factory, I will have them look at it.
Jeff