As a Spurs fan it's annoying, but didn't effect the result so that's great.
As a ref, and this will sound awful, but it's great! It's good to know even at the very top people make errors. I've had sleepless nights over decisions I've missed, things I've given and realised it was wrong. But this does make me take heart thtpat the very best can make those mistakes as well. I don't like seeing them get it wrong at the top, but we're all human.
In fairness to the AR it's a pretty unusual situation. When watching MOTD knowing the result I thought the ref had blown for full time during our break away, which I thought was poor form, but the offside call was a bit baffling.