Place your hand on your partner’s eyes and move his gaze so his whole body is effected by it. For example you feel he is tense toward the downward movement so you move to the side and up and he is in your control. From this uncomfortable situation (keep moving him and moving yourself) he has to remember he has arms and legs and use them to escape and affect whoever is in contact with you. You can start this on the ground by moving the head or anything else you like (take his toe and twist it and watch the whole body react) and move toward a higher position to learn to relax the spine more and to remember all of your body and to use it when you are under pressure. Another way to start this is to stand on one leg and receive pushes and pulls from your partner and letting your body relax and find the smallest movement to avoid getting hurt and keep your options open.
Remember people will come to you in all times for things you may or may not be ready for. Our ability to think and change will get us through along with our faith that it is possible.