Geez I hate having to say this at all, but Gant was out before Hrbek lifted him. It was a good clean baseball play.
Watch the video at 0:45, and you'll see that as Gant's leg comes off the base Hrbek's glove and left arm are not under Gant's leg. Gant wound up in an awkward position because he didn't slide and lost his balance to the point where his foot came off the base while Hrbek continued to apply the tag. Gant was out at that moment. Did Hrbek lift up Gant's leg after the out was made? Yes, absolutely, but that didn't matter one iota. The play and the inning were already over.
As an aside, I was at Back Channel Brewing in Spring Park a couple weeks back. They have a mighty tasty double IPA on the menu there called Gant Lifter.