Now that's rather odd, to see two players with the same "problem" within such a close period of time.
The "spamming" connection "problem".
Did you run a full scan with HitmanPro? And did it pick up anything?
Running HitmanPro won't let you join the server again, it will just remove any unwanted "spam"/"malware" kinds of programs.
To be able to play on Argonath again, you need to be un-routeblocked.