Crewe first-team coach Steve Holland has admitted Gary Roberts was left out of the side on Saturday for disciplinary reasons.
Roberts was set to make his 100th league start against Forest (Getty)
A training ground incident cost Roberts his place in the team for the goalless draw with Nottingham Forest.
"I don't think any coach goes looking for problems but when they arise you have to deal with them," Holland told BBC Radio Stoke.
"Nothing and no-one is more important than the spirit of the team."
We are fighting desperately hard to stay in this league and we need everyone pulling in the right direction
It is not the first time this season that bad behaviour has caused Roberts to be left out of the Alex side.
He was omitted from the team that travelled to Carlisle for not reporting to training.
"Crewe Alexandra Football Club means a lot to a lot of people, a lot of staff and a lot of supporters.
"We are fighting desperately hard to stay in this league and we need everyone pulling in the right direction," added Holland.