Stuck Caliper, Maybe?

Driving home today, my truck starts pulling slightly to the left. I get out and I can smell the front left brake. It's definitely stuck. It's a 2000 Frontier Kingcab 4 cyl. 4X2. Just curious if this has happened to anyone recently?

Rod

yes! my truck and my bros X, if you put it in rev and do about 15 to 20 in rev then slam on the brakes, it will line it back up and youll be good to go, i think its caused by heavy loading of the brake s like four wheeling carrying bag loads or emergency stops, haop it works mman.