Sorin Cartu was raging after his side were beaten 1-0 by Basle in the Champions League on Tuesday night.
The angry boss slammed his boot into the dugout in Switzerland as they suffered an eighth defeat in their last nine European games. He shattered the perspex before being restrained by one of his coaches.
It all makes Wenger look like he was mildly upset.at the Emirates on Saturday.
He threw a water bottle at the ground at the end of Arsenal's shock home defeat to Tottenham after they had led 2-0 at half-time.