Poynton told the News of the World: "We hold our hands up as a club. We deplore what certain fans have done.
"I use the word coward very reservedly but I class anyone who wants to throw a coin or something else when they are leaving as cowards.
"I am ashamed to admit in one case excrement was thrown. How low can you get? We did what we could, we tried to brush people down and compensate those involved."