Backheel Penalty kick:what's the offence?

His full name is Theyab Awana Ahmed Hussein Al Musabi(that doesnt sound familiar,does it?)but i'm sure most football followers have heard about him after he scored that 'outrageously audacious'(just give me other words) backheel penalty goal(and if u've not,then you can see goal here), he was shown a yellow card,substituted immediately and his national team coach has been screaming his head off ever since. My question is 'is his 'offence' that bad?i really dont think so.
Yeah right,i knew you were going to start talking about mutual respect in football,but u sure remember a few backheel goals,dont you? from Thierry Henry to Gianfranco Zola to C.Ronaldo to even Chicharito...i cant remember them being carded or being screamed at by anyone. Agreed,he's not even the best player in the UAE (1 goal in 7 games),but then he has had his good days and he's still 21.Stop giving a dog a bad name just to hang it and let's get on to the more interesting things.
I rest my case.