I am going to assume that the restart-service winRM would not have worked anyway, but having a misspelled commend is what caused you to have an error in this demonstration. "Restart-Servive" will never work...
Other than that issue, this was a very informative demo, thanks!
There's also nothing about JIT in this video, just JEA.
Restart-serviVe not works? Impossible.. :)
This is nice but the administrators I REALLY want to limit do not use powershell. I would really love a good RBAC tool from MS so I can EASILY limit functions to service desk or Jr Admins. These people are not going to use powershell that often.