One, Herobrine is just Evil Steve. Not like he's real. Two, The same thing happened to me. BUT It wasn't Herobrine that knocked me down. I mis-pressed the "A" key, and fell. If you disconnected during the game and re-connected, try Disconnecting and re-connecting aswell. Just a Suggestion.
IGN: Tehmuffinman191 Age: 15 Skype: zach.rains (No random adds) Plugins: Nope. Just Building. I'm friendly and trustworthy. But I do trick people aswell.
It doesn't matter if I get staff or not. I just want a regular MC server.