Use your thumb to depress the RIGHT ear pad near the long outer edge, creating a gap between the cushion and the frame.

Insert the flat end of a spudger into the gap you've created, between the edge of the cushion and the frame.

Pivot the spudger down to unclip the long edge of the ear pad.

Repeat around perimeter of ear pad until it is loose.

When the first clip disconnects, you'll hear an audible clicking sound.

This may take a considerable amount of force. If the cushion won't click out of place, move your spudger to different points along the long edge.