What on earth has the door release argument got to do with the elimination of the remaining guards on LO? The driver already releases the doors on 100% of LO trains. You can't argue that eliminating guards will decrease safety due to improper door release because the drivers release the doors anyway.
If I were the RMT my main argument would be based around passenger security, particularly at the eastern end of the line.
I think you can use that argument and I have alluded to it already, The number of wrong side door opening has increased by at least 95% since the introduction of class 378s and that is what say in 3 and half years! The trade union has asked for comparison periods of time this is declined, the union also asked for wrong side door release incidents since LOROL took over in 2007 this has been declined, the union also asked for door opening incidents at locations where there is no station (which has shot up by 100%) this has also been declined. We are also only asking for incidents on the NLL/WLL/Gospel Oak to Barking lines!
Now I am absolutely 100% positive and I would bet myself and my family that if the results showed that the Guards opening and closing the doors made it less safe and that more incidents were occurring the company would be screaming it at our and no doubt your faces.
Could this be why the company have refused to show the union its safety case on the issue of DOO?