I am sorry to hear you are worried about Pippin. I am a veterinarian and will do my best to help.
Have you had him checked by your veterinarian for this problem? The first thing I would try to determine is whether his being wobbly is a neurologic or an orthopedic problem or a heart problem.
If it happens again, I would check his gums to see if they look a normal pink color or if they seem pale at all. That would also tell us something about why this is happening. If his gums appear pale when he is wobbly, then it could be a circulatory problem.
I would start with a thorough physical exam of his legs, joints, reflexes, listening to his heart and lungs, feeling his pulses, etc.
Wobbler disease is a condition seen in large dogs, like Danes and Dobermans, and is due to instability of the vertebrae in the neck. That is not likely to be Pippin's problem.
If he is excited by the lure, keeping him crated so he can't see the lure might be helpful, but he would still be able to hear what is going on and could still get excieted. It sounds to me that the episodes are set off by his quick turns and big pounce. If he were my own dog, I would be checking him carefully for some problem in his back, knees, hips, etc.
Let me know what else I can help with or answer. Rebecca