I'm not sure what some people have been watching to classify his reaction as rude. He shook his head but was smiling all along and when Len went off on one he looked genuinely a bit scared, put his hand on his chest, and muttered "sorry". They way some people portrayed the situation it was as though as the guy was spitting feathers and had to be restrained to not punch "poor" Len. Brendan and James have answered back in far worse ways than he did, not only to Len but to other judges too.
Unfortunately, some people don't like the Italian schtick, the whole ladies man thing and that is fine with me, but some of comments about him on this forum have been really nasty and to be honest I think they have more to do with his nationality than anything else. He's a good dancer and his routines for Georgia so far have been quite good. The rumba didn't have enough rumba steps, so what? Does it grant a reaction like Len's? I don't think so.
Len's reaction didn't do him any favours, though. All over the internet, especially on Twitter, general consensus is that Len's a past his prime cretin who goes on a annual random rant, of which his previous victims have been, well, nearly every dancer on the show, some more than others.
At least it the rudeness and grumpiness can't be blamed on jet lag anymore, this is who he really is.