ditzel..
That's the best part of the woods subframe. When the dealer installed my backhoe, he handed me a box of parts containing my whole 3point hitch assembly. I got discouraged, but after close examination, I realized he didn't have to do that..
The instruction manual for the subframe DID say to remove the arms. I assume that's why the dealer did it, but again, didn't have to.
You can leave the whole 3PH on the tractor, except the top-link (because it hits the backhoe seat during the mount and dismount). IT DOES NOT INTERFERE WITH THE SUBFRAME IN ANY WAY WHATSOEVER, as long as you leave it in the fully-up position. I take the hoe on and off all the time, and never have to remove the arms.
Keep in mind, I have a 2015, not a 2615, but I do believe the rear-end assembly is the same, and can't see why it wouldn't be the same for you.
The woods really is a nice set-up. 3 pins, and a little fancy work with the stabilizers, and its on. Only takes 5 minutes after you've done it a couple times.
Also, If you buy the Woods subframe, (which I definitely would) Install it yourself. It's a piece of cake. You just share two of the loader mount bolts on each side up front, and replace 3 or 4 rear axle case bolts on each side with longer ones, through the bracket. Real easy. It couldn't take an hour. I wish I knew that before.