The above statements are all true. That being said, when you consistently find ways to bash PJ Fleck in other threads then say you don't believe KHH's dad, it's also pretty easy to see why people read between the lines and assumed you were implying that PJ was the reason he left. I'll freely admit that was my first inclination.
Out of curiosity, do you have a theory? Or odds that it's something (20% homesick, 20% PJF, 20% climate, etc.)?
That said, I don't disagree with your actual statement. I'm sure there is more to it than just "homesick". He probably is dealing with something and feels like his situation will be better closer to home. Whether that something is can't stand the climate, academics, PJ Fleck, a lover/friend(s) back home, a sick relative, etc., I'm sure there's a "because..." as part of the closer to home statement.