In reality, if you want to add a 211 you don't need another line from the dish if you have an EA Twin. You would only need a 44 switch (even better would be a 33, no power inserter). The EA twin only needs 2 lines to the switch, but they MUST be attached to ports 1 and 2 on the LNB. If you are looking at the ports it would be the first 2 on the left. From the switch, you would run port 1 to the Power Inserter/211, and ports 2 and 3 to your node.
Confused enough? Just put that 2nd Joey back on your account and call it a day. In the long run, you're going to pay MORE to add a 211. Cost of receiver, cost of switch, cost of EHD activation fee, same $7 monthly fee. Sheesh, just leave well enough alone. Put some content ratings or parental controls on the DVR.