If it’s a persistent problem, then a few tee‘s and a few quarter turn valves, place in the auxiliary lines, and plumbed into a drain line back to tank, would be a quick and easy way to release the pressure, the valves or hose wouldn’t need to be big, and not necessarily installed at the quick coupler, it could be done within the machine very neatly. This would be a no mess way of releasing the pressure.
if the pressure is in the attachment however, then it’s more difficul, but if a simple drain line as above was installed down to the dipper end, then a drain line could also be installed on the attachment, again with quarter turn valves. Bloody lot of faffing around though. Just depends how much of a problem it is and how often.