I checked Shakhtar's official site and read an interview with Lucescu. I don't know if he's trying to protect his team's image, but he implied that Shakhtar helped Nordjaelland score the second goal. He said that it would be too much of an unsportmanlike gesture to stand like statues and let Nordsjaelland score. According to him, his team didn't want to make it too obvious, but they did help the opponents score, without defending with 100%. He asked "don't you wonder why did Nords make 7 straight passes when they scored the goal, and they were never allowed to make so many straight passes before or after that goal?"