I'm a low tech guy. When I'm felling in the woods or working on deadfall, after I take out all the branches and clear the area, I just start cutting. It's easy after a certain level of experience to tell when a cut will start to bind. I back out and start the next cut down the line until it binds, and then move along.
Once I get a bunch of cuts nearly done, I'll roll the log with my foot or, if it's big, I'll bend my back and push with my legs, and then finish off the cuts I've got before moving along to the next segment. On the rare occasion (very rare) that I kiss a rock or the ground with my chain, I've always got a backup saw waiting, as well as two backup sharp chains, so I can keep on keepin on.
I have a 4-foot metal prybar I keep in the bed of my pickup for those logs that REALLY need some leverage.