Luckily, Navigator John ultimately avoided having his brain scooped out.
Before he could be strapped to the operating table for that "corrective" surgery again, Captain Ed of the Orville sent in a squad of heavily armed soldiers. The Marines used the portable devices he and Gordon had used when they infiltrated the Quill warship to disguise themselves as a group of "native" terrorists, then brazenly stormed the law enforcement agency. In the end, they rescued the poor fellow who had nearly gotten his brain scooped out.
The people on Sargas IV had no idea that the Orville had rescued the prisoner. They merely assumed he'd been taken by a group of cunning, powerful terrorists. So, without revealing the existence of the Orville or its "aliens" to the "local" natives, Ed and the others had once again managed to exploit a loophole in the Planetary Union's laws. As a result, no one was held responsible.
As for the "local" native café waitress whom the "aliens" had brought aboard the Orville to help them come up with a plan, she was, of course, released without any restrictions.
Captain Ed and the others were clearly unconcerned that she might tell people about them. They knew that without evidence, no one would believe her baseless claims when she got home.
It was just like Earth in the twenty-first century. The internet and newspapers had been full of stories from countless people claiming they'd seen aliens or alien spaceships, or even been taken aboard a ship and questioned or experimented on. Some of the stories had sounded remarkably convincing, but in the end, hadn't people just dismissed them as jokes or fabrications by the mentally ill?
And so!
After recovering the dead doctor's body and taking care of the other doctor whose brain had been