Under 2.5 goal error

Thankfully the error wasn't mine!!! Last night was the Celtic v Ac Milan game and a draw would suit both teams - after watching some of it I have to admit I joined the draw fix bandwagon on the Betfair Forum. I decided not to back the under 2.5 goals as I thought the price was short and therefore there was not much scope for a price fall. However, one unlucky person made a mistake it would seem and laid the under 2.5 goals when trading around 1.2 at levels up to around 1.45. It must have been an error I can't see how it could be anything else (clicking on the image should make it bigger).