They bled the master. Once the bleeder screw was opened the possibility existed for air to enter the lines.

Also,
</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">I pump up the brakes, then Dennis cracks the bleed on the front pass side. OK, no problem. When I go to pump up the brakes again, they are really soft as if there was a whole bunch of air in it??? The fluid is also very foamy.</font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Which indicates that there was pressure in the front system even after the repair, until the bleeder screw was loosened. It appears at that point they are pedal bleeding, not vacuum bleeding. Was the switch on the delay valve depressed during bleeding? Were bleeder lines into a clean jar of fluid used? Were proper brake line wrenches used to ensure the bleeders were properly sealed before the pedal was released?