We talked to Mia Kang outside Trinity Boxing Club in L.A. -- and the S.I. model/aspiring fighter told us Tyron's haters are OUT OF THEIR MINDS ... 'cause Woodley did exactly what he was supposed to against Demian Maia.

Mia LOVES that T-Wood fought smart to keep his belt ... even if Dana White and some fans didn't.

Speaking of Dana ... the UFC honcho might wanna meet with Mia soon -- cause she's ready to throw down in the cage!

But does that mean Mia's hangin' up her bikinis? She broke it down for us.