You can't see that it was him at all in your demo. Someone saying for him not to block is not proof enough that it was indeed him doing the blocking. In future, you would need to hit your spacebar and use the wideshot in order to capture the blockers name. I'm sorry but I can't issue a ban with that demo. Also in future don't use special characters in your demo name, else it makes it unable to load. I had to rename it to make it work.
Thanks for the report,
Lotus