Just got done with the youtube clips.
I think what's getting ignored here,is the reasoning given by Amir that he felt 'obliged' to bowl the no-balls since Mazhar had claimed his friend would remove all trace of the apparent investigation of the text messages and calls by Ali,which was the conversation that took place during the hotel parking.I'm not defending what he did,nor am i saying that he's telling the absolute truth,but it was understandable for him to bowl the no balls because he was scared that if he didn't,Mazhar would ask his 'friend' to open the supposed investigation into the Ali texts again and con Amir.
The performance put on after the no ball,as mentioned by Jono,could well have been done to not make things suspicious,in order to ensure that Mazhar doesn't ask his 'friend'' to open the investigation again.
I'm not defending Amir,but his explanation during the interview is definitely not as laughable as it is being suggested in this thread.Also,people who can understand Urdu would probably get a better idea of his explanation and his true emotions,since the translation in English would miss a bit of that true emotional aspect.
I think anyone who's actually interested in the interview should watch the whole thing,and not rely on twitter and articles alone.They don't cover it that well.