His eyes express the gestures of suppressed anger which I presume is directed at us "apostates". He'd be a nasty and worthy opponent to any of us in a confrontation since he is both knowledgeable and eloquent.
By applying the scripture on Psalm 73 against feeling envy for the "wicked" it was amusing to think that she was having a nice conversation with her "wicked" workmate. That would be a perfect sound bite (16:30) to use in making it obvious that JWs consider the rest of humanity "wicked".