sorry 4 not getting back in touch sooner but computer access restricted.
Now to the problem.
Does both pistons in the front brake callipers move back and forward feely? If so.
also the calliper moves along slide bolts which have rubber seals on the calliper end, sometimes these seals split letting moisture in causing the calliper slide bolts to corrode not letting the calliper to slide free.
other than that i'm a bit puzzled with the fault.
Hope this helps you
Vw Nutter
June 2009