Well, I haven't used a protractor to measure it accurately, of course, but given that it starts of going to De Gea's left, causing him to step to his left, and ends up in the right hand side of the goal, 90 degrees probably isn't much of an exaggeration.
I've sort of given up watching any of the punditry. It just makes me shout at the tv, which causes minor ripples in the otherwise undisturned lake of serenity which is Sir C Towers.