Here's how I view it. Told medic to leave, therefore implying you have no intent to take him hostage. So what combat would he be avoiding by redeploying?
It'd be one think if he redeployed to avoid engagement, but he did infact leave like he was commanded. APD says leave or die all the time in Kav, and we either all redeploy or fly away. Except me, I drive around in my strider
2 wrongs don't make a right. If you ever feel like someone has broken a rule you should dispute them and file a player report. Shouldn't take matters into your own hands