Congrats Dave! I had my eye on that one too, but let it go for lack of funds. Glad another iceinspacer got it.
At a very good price too!
You don't need to unscrew the barrel itself. It's meant to stay in place. The 2" barrel on the outside is only for convenience so you can use the EP in either 2" or 1.25" focuser without needing adaptors. Whether you use it as a 1.25" or 2" makes no diff optically.