I wish I had thought to do this

Lifeline in Knitting

I am knitting a men's XL sweater, taking a flat pattern and doing it in the round so that the endless rows of stockinette stitch didn't do me in.
Unfortunately, when I did the shoulder and neckline decreases, I forgot one thing... arm holes.
So now I'm trying to rip back the decreases so I can switch back to flat knitting (I'll place the "front" and "back" on different circulars at that point to create the space for arm holes.

I was so excited to have knit the 27 inches of torso (56" circumference, mind you) that I got a bit ahead of myself.

Lifelines will be installed from now on.