According to not only the Wigan manager but their chairman too, that challenge was completely clean. You know, rather than try to stir up a situation what's the harm in just manning up and apologising rather than trying to cover it up like its nothing?
The club is doing nothing but harm to their reputation with statements like this.
End of the day one of THEIR players made a potentially career ending and malicious challenge on another team's player and from what I hear he did a very similar challenge, studs showing to a Manchester City player in what I think is a reserve match not too long ago.