One of the healing thingy is at 28:00. It doesn't look like that serious maybe as a stand alone thing. Same with 32:00 the healing again at Roshan. I know its not the same when tiny toss someone to the enemy with red hp, but he almost let die in this point.
At around 35:00 he has the chance to run back fast when they kill lucifer near to him but he doesn't care, just 'waiting' there. Around 36:00 he run out to die... A bit after 42:00 he run out to die again. There was not any positive effects of his "run out actions".
But the absolue about proof about the refusing team play is the line what we wrote at the end:
45:06 Wind [Allies] guys im sorry im just new playerThis shows without question that he was talking in english and he choose to ignore the communication etc with us on purpuse. (Without this line I would leave the opportunity that he cannot speak in english, but no its not the case at all.)
Hope it enough, I checked the replay 2 times...