Hello and welcome to the forum.
This kind of blocking will happen all the time, sometimes it's on purpose, other times by mistake or technical problems that the player is experiencing, like a keyboard button that doesn't work that well.
Some things that I will have to point out here are that, we accept only .demo you will have to use the games recording method, also screenshots can be used as evidence (chat or inappropriate sprays can be reported)
A very important thing, you will have to bind this command /zstuck. Bind it to a mouse button, it's the fastest way to activate it. Mouse 3, 4 or 5. All mousse have button 3, that is the button on the scroll wheel. By binding the command you can use it when a player is blocking a path, or like in the video you posted, you could have used the command in mid air and go thru the player that was blocking. A very useful command and a must have bind.
If you are having problems making a demo, screenshot or binding a button with a command, please feel free to post here and I will guide you with some links.
