I had the same problem on my ute,i passed out going through a round about due to type 2 diabeties which was un diagnosed at the time.I hit the round about with the front right wheel with enough force to tear the caster bar mount off the chassie which pushed the wheel back,maybe this has happened to your ute or similar.I then sold it pretty much straight away telling the new owner off the problem before he bought it,i was in contact with the new owner about a month later and he had fixed it without any major dramas.Maybe made easier because he was a qualified panel better and spray painter.