"I can't explain what happened in that last 30 minutes. I was quite pleased going in at halftime. We started the second half well and had three easy opportunities and created line breaks that we should've put away but we blew them," said Young.
"The last half an hour we all have to take a look at ourselves.
"Something we pride ourselves on is making sure sides have to work very hard to beat us, we let ourselves down tonight.
"If you look at their tries they were pretty much all from turnovers in our own half and our mistakes. It was not a case of Ulster building pressure and momentum. The last 30 minutes we were out on our feet and all at sea in defence.
"We lacked composure and urgency and our body language was poor. We all have to look at ourselves, from the players to the coaching staff.
"A lot of people have been complimentary about us, but the players have to start fronting-up and showing what playing for this region means. It was hugely disappointing. Obviously we were tired and fatigued but they have not played in two weeks either so were in the same boat.
"The players have to pick themselves up. We work on things structurally throughout the week and can put the policies in place.
"If you are going to achieve anything you have to turn your home venue into a fortress.
"Sadly we don't seem to be doing that and we have kept our two worst performances for the home fans."