Originally Posted by clarence5ybr

After you claim your bags, you can pay this business to store them for you, which would allow you to go to the club without dragging all your bags.

Getting back through security might be an issue, though. The BP for your inbound flight might get you through if you claim you left something on the plane and need to go back to the gate to try and find it. Alternatively, you might be able to get a gate pass from a ticket agent.