Glad you didn't wreck! I've had at least 7 calipers lock up on me in as many as 4 different Jeeps but I never experienced what you did, usually it will just pull really hard to the side that is locked under braking when it's a front caliper. In fact, my right rear locked up on my LJ 2 weeks ago and I didn't know it until I got home and smelled it. I ordered both the left and right from RockAuto, $140 for both with pads, $120 minus the core charge but you have to ship them back so I figured the shipping charges wouldn't be worth the time. Advance auto wanted close to $400 for the same thing! I would suggest you change both fronts instead of just the one, chances are the other might lock up also... I let my ZJ sit for 5 years, got it back on the road and had 3 calipers lock up within 100 miles, days apart from each other so that taught me a lesson to change both whether it be the front or rear.