ATC Watcher
The one thing I'd add from the BEA report is that just before the incident "someone" had managed to fire up her normal position - the one with a view westwards to the thresholds - and she said that she intended to move positions as soon as workload allowed. But "She added that she was preoccupied by the anticipation of changing positions" at time of the incident.
[ [i]Elle ajoute qu’elle était
préoccupée par l’anticipation du changement de position. p.6 of BEA]