I'm perry sure it's screwed. When you have the toilet off look at the flange. Mine had yellow rector seal dope on it. So I knew it was screwed. Put two bolts in the flange and use a straight bar across it to move it.
They were still using screwed in 2000 actually 1999 when constructed. Used the lever method, but found thin screws don't work, the sealant was thick and it worked with a lot of pressure, bolts are a good idea, I just used a thicker screw in the 2x2.
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