Question about my husky puppy?

acts very, very happy when I come home from work. He gets so excited, his little body just wriggles uncontrollably and his tail whips back and forth as fast as a hummingbird's wings move! What really confuses me, though, is that his ears are also laid back almost flat onto his head at the same time he's furiously wagging his tail! Is this normal? Do huskies flatten their ears back, all the while wagging their tail, when they're really happy and excited?