While it sounds like Hyatt's should give credit for "Hyatt" spa services, they aren't alone in not giving credit for apparently-hotel-owned/operated venues on-site. If you visit other folders like the Hilton one, you'll see Hilton not giving credit for some on-site restaraunts. I believe there was a thread there recently of someone eating a lot at one of their Hawaii properties on an award stay ...only to earn 0 points for their visit because the food establishments there aren't considered chain-owned.

I guess these chains just need to be much more clear and disclose if on-site vendors such as spas and food places are their own or not.