Yes I've had the park brake stuck on, luckily at the holding point, in an A300.
No amount of thrust, or resetting of the park brake would free it. In the end we had to get a ground engineer, traveling in the jumpseat, to climb down through the avionics bay and down the ladder where he then freed it at the u/c.
Make a point of not setting the PB on the runway now.
DH