Jailbreak

Spoiler: Hint

You have to hold the spinner while B passes through it

I couldn't get anywhere until I read the Hint. (It moves really slowly!) After that I had to keep lifting the bars up and down until one of the bots went down the middle to get the star!

Quite tricky but a clever design.

Spoiler: Alternative gameplay

I thought at first that the cage was a red herring as i let he three cylinder rotatable swng and knock B to the ground and walk to the win. I didn’t see why the win wasn’t otherwise protected