Neill Collins described Tuesday's draw with Crewe Alexandra at Bramall Lane as a 'strange night'.
United led 2-0 before trailing 3-2 early in the second half and Collins believes the Blades had clear claims for a decisive penalty turned down by referee Adcock after Nick Blackman had equalised.
Commenting on the six-goal spectacular, the Scotsman remarked: "There were two or three fortuitous goals, but we got a point and now we move on to another tough away game at Brentford.
"Sometimes in football you get strange nights like that. It was certainly an entertaining game for any neutral.
"I am often the first to accept the blame or criticise after conceding goals, but Crewe's first two certainly had an element of luck, as did our opener.
"I thought Crewe were a decent, energetic side but once we got back to 3-3 I really thought we could kick on and win the game but it wasn't to be.
"We had chances and on another night we could have had penalty, but we must learn a couple of lessons, dust ourselves down and go again at the weekend."