I did manage to get the bar out, but I"m sure it's bent. The chain is still in there. I"m not sure why I thought I could cut this particular area without it pinching because the way the limb was, I knew it was going to. WTF? I actually had some cinder blocks nearby and was thinking of using them at some point to hold some areas, but I didn't' for this particular limb. No idea what I was thinking, but maybe it was God's way of telling me I need a few more pointers before I hurt myself, lol.
Cinder blocks would have kept it off of the ground, but you'd still have the problem of "rocking" your chain on one of those cinder blocks. Rocking means touching a rock or ground, rendering your chain very dull or FUBAR in an instant. Any wood placed under the trunk, including a half rotten limb, a few tree branches, some already processed firewood, etc., will keep your chain from being rocked.
Reading tension/compression can be tricky for even the most seasoned cutter. There are some more techniques that may help:
As already mentioned, a plastic wedge or three can get just about any saw out of a pinch or even prevent pinching if inserted at the right time.
As you cut,
carefully watch the kerf for the first sign of closing/narrowing, and pull out as soon as you notice it.
Some will implement a slow,
back-and-forth sawing motion while cutting. That is, act like the bar is a slow moving crosscut saw while the chain is cutting, and pull out when you feel the first bit of resistance. It can take some time to get the feel for this technique, and it can't be used in all circumstances.
As for the timberjack, use it to roll the log and elevate it at the same time. Many times simply rolling the log
a little bit will open the kerf enough to free a chainsaw bar.
No plastic wedges? A long
crowbar or preferably a
(broken link removed) prying in the kerf works very well to open it temporarily to free the saw.