But Wilcox put on two substitutes at half-time, as well as having a few "choice" words, and it changed the game in Scunthorpe's favour.
Sam Winnall pulled one back in the 49th minute before Hakeeb Adelakun rifled home a wonder goal nine minutes later.
Then defender David Mirfin popped up with an injury-time winner to give Scunthorpe their first win in six games.
"It was an amazing day," said Wilcox. "We were trapped in the hotel for 35 minutes by a van and then we didn't turn up in the first half.
"There were a few choice, but constructive words said at half-time - I made it known the fans had come a long way and we weren't performing - I made a couple of changes and put two wingers on and we turned the game on its head.
"At 2-0 down we knew the next goal would be important and we got it early, got it back to 2-2 and I thought it would peter out for a draw, but then David popped up with a fantastic header.
"It was the best three points of my reign and maybe the most important win of the season."
- Sports & Recreation
- David Mirfin
- Lee Molyneux