Not to throw another mod suggestion out there so soon after you pulled dynmap but have you taken a look forge irc. A lot of us enjoyed being able to access server chat while we are "offline".
Server Down
Seems we are hitting a Memory wall. I am going to yank Dynamap. Gimme 15 min.
I've been monitoring things very closely since I really wanted to have dynmap but even when I shut off rendering completely for extended periods of time the server's performance dropped noticably.Did you have dynmap set to High rez with a full render? If so, that will pancake a server for quite a while while while it is rendering. You can do a low rez render, or give the admins the option to kill the rez during "peak" times and start it again to run overnights.
So, I saw a few posts on g+ pop up while I was at drill about needing v8 and not 8.1. Now that I'm back and wanting to get on I find that I have the same problem. Was that ever remedied in any way, or should I just wait for the server to update again?