No.
It seems he intended to take his break at 5pm, but NR did not provide cover.
In the (30 minute process) of shutting down systems to take a break, two managers arrived and suspended him there and then.
I guess the managers only arrived because they had alerts the signaller was shutting systems down.
Why it requires certain systems to be shut down, I don't know. When I take a break, I just go.
Interesting though, the Daily Mail says:
"A spokesman for Network Rail said Mr Lee had closed a signal box 'at the height of the weekday rush hour', a claim he refutes."
But that IS what happened.
Okay, if you're being absolutely pedantic about it, he didn't get the opportunity to fully close it (as the article also states) but when you start logging systems off or whatever, you've started the process.
Network Rail goes on to say that following his grievance in 2015, cover for breaks was now in place, but when cover could not be found, a financial payment was made. It suggests the signaller in question has accepted this payment over 20 times in the past.
It's starting to sound more and more like the signaller is at fault here.
He wasn't sacked for taking a break. He was sacked for not following a specific instruction from his manager.
And signallers wonder why Network Rail want just 12 boxes.
Would solve many problems like this.