It was a Russell Smith penalty. Personally I didn't see much obstruction - if there was a penalty it was a very technical one. Having said that:
Sam Thaiday I thought clearly knocked on in the first half
**Tate should have been penalised for punching Gallen not the other way around**
Whoever it was who twice kicked Tamou before he fell on top of him and was penalised should have been penalised instead
The officiating of holding players down was very subjective and one-sided.
I was watching at the pub so I couldn't hear the commentary - that Tate/Grant/Gallen punch up a few minutes in, I thought the penalty went to QLD for the initial high tackle from Grant? But agree that Tate was a bit of a dog by punching a guy on the ground