As an approach controller the first thing I do (when things are becoming brisk or an unforeseen event occurs) is get someone else in beside me. The bare minimum is a second pair of eyes and someone who can co-ordinate EAT's or (usually by phone) diversions leaving me to do the basics of vectoring .To do it alone is madness.
Absolutely agree. However, do we know if the controller had that option? There's a lot going on at management level in Spanish ATC right now to reduce costs and keep staffing levels at minimums.