Bizarre Tire Wear Pattern

[85Sub4WD]

I have somehow worn the outer edge of my passenger side tire (right side from driver's perspective) and the inner edge of my driver's side tire (left from driver's perspective) within the last 6,000 miles. The tires aren't evenly worn either, with patches almost down to the end of the tread, and others with a little more wear left. I am an enthusiastic driver, but I got well over 10k with my previous front tires, and they were rotated onto the back end, with still ample wear left. I also do not spin tires doing fast take-offs and silly stuff like that, though I have had my brakes lock up a few times during emergency braking (apparently my car is sometimes invisible to people pulling out into traffic - and I run my headlights all the time!). I have pumped them afterward, and have not allowed my wheels to remain locked for any length of time.

 

I have also had a weird vibration in the front end that comes and goes, and my steering is squirrelly. I replaced my front shocks and had it aligned 6,000 miles ago (tires rotated then), and I did my front brakes about eight months ago. I ended up using a puller to get the hubs off because they were rusted so badly, I could not get them off otherwise - is it possible I bent them? if so, why does my vibration come and go? - could I have a tow-in problem? I am not getting any noise from the front wheel bearings, and the front suspension seems rigid - save the worn sway-bar end bushings (waiting to put bigger swaybar on), and front-end geometry seems correct (ie ride height, camber, and caster)

 

Any thoughts would be appreciated!! - this is an annoying problem!