No casinos will arrest and charged dice players for "throwing" dice any certain way, just like the casinos cannot arrest and charge players for counting cards. The players only get arrested and charged because the casinos suspect cheating (swapping loaded dice, etc).
Your friend didn't tell you the whole thing. There's more to it than what he told you.
It seems like there are quite a few casino employees posting in this thread. Maybe they can verify this simple fact.
I think that's both arrested and sued:
http://www.vegasinc.com/news/2011/oct/02/argentinian-dice-players-being-sued-wynn-resorts-a/
Kevin