It seems that it's only LB that is closed, and only for access, if it wasn't the beginning of the line, you can get in your train in another station and just drive through LB.
We've had worst when the station being closed meant no train was actually allowed to go through at all!
You have to laugh at the petty comments from people nice and warm at all, who can't sympathise with the nightmare some commuters will face, but expect others to show sympathy they haven't got themselves 
You can be very grateful for the amazing police and still moan about the massive inconvenience -it's not the police anyone blames, it's the flipping nutter(s) that that were the cause in the first place!
Ignore the ignorant idiots who haven't got a clue and are all excited because there's a drama there are nowhere near close to.