The others watching the simulation were standing behind Quinn. They could see both of his hands shaking, and not a single one of them dared to say a word, nor did they approach him. While on Earth, and most of the time Quinn was with the others, he would be in a constant state.
He was always suppressing his energy so it was unable to leak out, so others not on the planet, those nearby, and of course the celestials as well wouldn't know about him and would not know where he was, but this time, with what he could see for a second he couldn't help it, and it broke through for a second.
'Borden… this is how you meet your end?' Quinn thought. It was disgraceful.
To die in battle, against an enemy that he perhaps knew nothing about. Jack Truedream was an enemy that was created due to him obtaining the shadow, due to his mess with Erin trying to hide her, and the Blade family.