Felt carbon steerer compression plug removal

How do I remove a compression plug (aka. expander bung) like this one?

Most guides I could find assume that there’s a 6mm hex Allen opening that allows tightening/loosening the plug (example pictured below) but that’s clearly not the case with mine.

I read there are designs that require screwing in the bolt partially and hitting it with a hammer until the expander’s loosened but I’d rather ask first. The → REMOVE and INSTALL ← markings seem to suggest that there’s another way to remove it.

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Note that the 2mm gap visible on second picture was caused by the plug being loose enough to be pulled up when tightening the top cap – the spacers can rotate freely and the whole fork gets slightly loose after a few days. Adding another spacer only caused the plug to slide out a bit further so I’d like to anchor the expander properly.