No, exchange still means what you think it means. The issue they had is that a bunch of orders got stuck in a queue somewhere and thus couldn't actually be exch

No, exchange still means what you think it means. The issue they had is that a bunch of orders got stuck in a queue somewhere and thus couldn't actually be exchanged. This is all a question of how you deal with that. NASDAQ decided not to just cancel the orders or execute them later but to provide them the trade they "deserved" Personally, I think that was the right decision, but it's your call.