2002 vw gti immobilizer lock out

The car is in lock out mode, which doesn't allow the engine to turn over.  The customer had a remote start installed at another shop a few months ago.  He doesn't drive it every often maybe once every 2 weeks if that, and he noticed that sometimes his remote starter wouldn't start the car.  So I'm thinking they used a ring instead of cutting the immobilizer, the proper way.  So he would try and remote start the car it wouldn't turn over so then we would use the key, and it still didnt turn over.  Now even with the original key the car will not turn over, I'm thinking the immobilizer is in lock out mode.

How do I reset the ecu and get the car running again.  I've tried disconnecting the batteries and touching the (+) and (-)  to discharge anything in the capacitors.  We've let the car sit disconnected overnight.  We tried changing to a new battery.  Nothing seems to work.  I don't have Vag-com nor do I have access to one.  The car is stuck in the guys driveway.  Btw the car is completely stock excepted for a chipped ecu which was installed 3 years ago.   What can be done?