Don't get all touchy on me here. I'm just looking for compromises. As it stands, you can't even get close to being a horse thrower, and I have a feeling whatever "re-balancing" actually happens will be less then ideal. My main lobby, the most important, is getting the wpf need lowered. With a lowered wpf need, you wouldn't require as much weapon master, and it would free up a lot of wasted skill points for you to spend on horse related skills. I don't pretend to know what your build looks like, but I can only assume that it is probably the most expensive build there is. Throwing requires a huge investment, so doing it on horseback seems impossible. If you have any suggestions to add, please do and I can modify mine if possible and hopefully we can put you back on a horse again. I wouldn't get too hopeful, though since I doubt even I will ever get to be a pure thrower again, and I'm on foot.
Post your build + horse and weapon of choice pre-break, so I can educate myself. You may actually find that the changes I'm suggesting would make it a lot more plausible, even if the powerthrow needed for javs is increased by 1.
Edit: I made a few edits adding notes I shouldn't have left out. That will have to do in the mean time.