Part of me wonders whether it really was "accidentally" left behind or whether it was done so they could conduct a 'real world' exercise. Then part of me wonders why you'd choose the last day of the season to do it. Then the first part of me says the last day is as good as any when it comes to league matches, as it is the match least likely to have a bearing on anything important.
They probably did it so that Sky could have some Tuesday night football. Follow the money.



Way to punish a club for taking maximum precautions about a possible explosive
He is a Chelsea fan so was probably looking to wind me up a bit and stop me from laughing about their season. 