This also may not be the most helpful suggestion at this moment, but you really should be able to pick your bunny up, in cases of emergency this will be necessary.
If held properly he would not be able to jump out.
Not advocating picking bun up all the time, but sometimes a little tough love is necessary.
I like to start by petting on the nose to they stay calm. Then slide your left forearm (if you are right handed) along side the left side, and your right hand under the front quarters on the right side. I use a “C” grip, so thumb on bun’s shoulders, fingers either in bun’s armpits or front legs (but not feet). Simultaneously scoop up bun’s bum with your left hand while lifting with your right, and pin bun against your left forearm. Then tuck him under your left armpit, while maintaining this grip, like you are running a football.
The most secure bun feels, the less likely to struggle.
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The answers provided in this discussion are for general guideline purposes only. The information is not intended to diagnose or treat your pet. Seek the advice of your veterinarian or a qualified behaviorist.