A close-quarters control drawn from classical karate's tai-sabaki - 'body management' - where the smallest handle on your opponent's frame gives you the largest change in their balance.
Off-balance the opponent by controlling the head and creating an opening for follow up.
As they pressure forward, cup the outside of their ear with your lead hand. You are not grabbing the head; the ear is a small, sensitive handle that redirects the whole spine.
On contact, step your lead foot 30-45° off the line of attack. Their momentum passes you, not into you, while the ear draws their head down across their own centerline.
Where the head goes, the base follows. Their posture breaks and exposes the neck, ribs, and near leg. Follow with a palm, knee, or sweep, then release cleanly and return to guard.