The Swans veteran had his arms pinned in a tackle by Giants forward Jonathon Patton and executed an "offload" to teammate Dane Rampe.
Unfortunately the umpire spotted the illegal disposal and a free kick was awarded.
We don't think Grundy is going threaten SBW's position as the best off-loader in sport though.
Wrong sport, Reg. #AFLGiantsSwans http://t.co/RvUCzNv9vC
— AFL (@AFL) August 22, 2015