The hand thing is the only thing I'd perhaps consider disrespectful. Knowing Anderson from interviews and stuff, I am sure that was not his intention anyways.
But fighting in an elusive manner is not showboating. It's simply fighting in an elusive manner. You've got to throw fakes, have swift movement, confuse your opponent. God damn, that was beautiful.
To go off-topic, I was really impressed with the level of striking technique shown in all fights today. Sherk/Griffin had excellent exchanges on the feet and Thiago Alves looked amazing with his muay thai. Heck, even Josh Koscheck showed some really good kickboxing skills.
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