I think he is just a bit shy ??
Last week after we beat Salford, Big Dave was his usual boisterous self in front of the Northstand and Atoni just tagged along behind him and looked very uncomfortable joining in and there is a video on Twitter from last night showing the guys singing the victory song in the dressing room (led by Dave of course !!) and Atoni is in the back-ground, again looking a bit sheepish at first but then starts spraying the ale and giving it 'the beans'
It looks as though Dave has taken him under his wing and is now finally getting him to come out of his shell, whereas before now, he didn't even look like he could break his way out of it...