It will, as I said I struggled down that path a few years back. You'll be regretting getting that grinder out when you see how easy it is with penetrating oil and the biggest pliers/vice grips you can get your hands on lol. It will still take a mega twist to get it off.
Like you, I was replacing the caliper, now what I had to do was fish the caliper out of the wheel well and outside the chassis - mainly because I couldn't budge it and had to whack it with a hammer until a found the aforementioned technique. My point is if you need to do this, follow the handbrake cable 6inch or so forward into the chassis and you'll see a bolt and clamp that hold the cable to the chassis. You might find it easier to remove this bolt then you can swing the caliper forward and out the wheel well and sit it on the ground in front of you to attack it lol.
I didn't want to destroy the cable and no one on the forums knew if that was threaded or tapered or how it came out. The funny thing is, if you have never seen it jammed you wouldn't believe how jammed it is.
The other funny thing was the other side dropped right out first time. If I had went to that (near)side first I would have seen how I comes out and never struggled on the (off)side lol.