He's definitely not the new Earl. Earl behaved (and still does I assume) like that always, at every event he has ever played on, against every opponent he ever played.
I have seen Filler in person at several events (Eurotours, European Championships, Deurne City Classic event in Holland) and he is always very calm and silent and respectful to everyone he plays. Nowhere he shows this Mosconi behavior we saw this week, except at the Mosconi Cup.
I really believe he was instructed or at least encouraged by Matchroom to let himself go like this. Seeing him smile while doing it has me believing he loves it too, though.
What I meant by the new Earl was so many people hate him. I guess losers hate success.