He fumed: "We are simply not keeping enough clean sheets. We were a shambles at the back today.
"Where Frank Sinclair and David Mirfin have been excellent, they were very poor today.
"It is difficult when you find yourself 4-0 down at half time, but we have to start keeping clean sheets and be more solid at the back.
"We weren't picking runners up, we were playing offside when we shouldn't be and that's something we will have to look at ahead of the Bradford game."