People also seem to forget that the coaches are able to evaluate individual player fitness daily and thoroughly during the week. And we're not.
It was a perfectly legitimate disposition to rotate and he may have felt that both Asa and Vidal weren't up for 90 minutes on sunday before heading into a midweek game.
The only thing I disagreed with was not pushing Giac out left with Asa coming into the centre as I felt the centre needed more help but that was a Carrera choice (unless specifically instructed on that eventuality, obviously).