Crashed my site too…..syntax errors

I am no geek goddess, but the install seemed friendly enough. I put in the recommended code to remove the additional information tab and wham! Had to go into my c panel, find the plugin and turn it off. Once I got back into my admin panel, I tried to delete but it wont let me? Deletion failed: ParseError thrownsyntax error, unexpected end of file. Way to give an old girl a heart attack ??