Front end problems

I have a theory.
I think one(or possibly both) calipers is dragging on the disc, right from the get-go.The reason of this dragging could be from several different reasons. I think the compensating port is plugged or blocked. I think the overheating brake fluid is trapped, and expanding enough,or boiling, or moisture in it is boiling,to create enough pressure to lock up the wheels. That's what I think.
I think if you crack a bleeder as TB suggests,right when the event occurs, you will have a shower of extremely hot brake fluid and instant relief!Be vewey vewey kaawful!