“I just thought we didn’t manage situations like we have done this season,” said the Magpies boss.
“I warned the lads before the game that Crewe will want to play the best game of their season.
“They certainly did because I’ve watched all the videos of them this season and that’s why they got the result.
“Their fans were up for it because we are top of the league. Their players were going to run that little bit extra, tackle that little bit harder and defend as hard as they can.
“We’ve been doing that this season, but you will get hiccups and this was one of them.”