After your surrender, the arbiter self-destructs and nothing is left.
Thanks for the kind words
Viewing post in Surrender Control jam comments
There is more to it, though. If you surrender but change your mind and plug your keyboard back in, it resets to telling you how many devices there are.
I avoided checking the source code specifically to avoid spoilers, so I ended up spending about 10 minutes to create a vbs script to open the game and wait a few seconds for me to unplug devices so it could SendKeys for me, only to realize later that there's no code to handle that.