Sounds like something up top (booster, master) is fawking up pretty bad. I doubt your pressure problem and this are not related. Sounds like you are a good candidate for a new booster/master. Or at least take some stuff apart and see whats goin on. Oh yeah, if you pull the pedal up, does it relieve the pressure on the wheels that are locking up?
no, each time i pull the pedel up i can then depress it (an inch is all it ever moves) and over time (a day of wheeling) the front tire will inevidibly start to lock up. then i get out and crach the bleeder valve to relieve the pressure again.
i would like to find out if all of this is bad plumbing/dirty master.