I started to notice my steering wheel jerk to the right?

Hey, I have a serious problem with my steering. I actually have a history with it. I'll start off saying about 4 months ago, I started to notice my steering wheel jerk to the right. And in a short time span, it started to jerk to the right and left hard and uncontrollably. I was on the freeway and 2 hours away from my home and I couldn't drive it so I had to call a tow truck to bring it back home. But the thing was that when loading it up to the flatbed, my wheels were turned fully to the right. Mind you that I have no power steering so any given time to turn the wheel I have to put a little effort. But it seemed as though if it were locked to the right. It took me and the tower to straighten the wheel, but in doing so I heard a loud pop. When I got home, I started the car to see if that pop did anything else to it, and it actually happened to pop something back in place, and the car ran smoothly. But now just recently, It's started to happen all over again. It's a 93 honda civic coupe dx. And come to find out, I had one back right tire slightly larger then the others. I didn't find out until now. After the first freeway incident, I got my axles fixed. And now the axles seems as though they are going out themselves again. Is the one bigger tire, the root of most of my problems or any at all? And what does anyone suggest I do. Thanks a lot.