Front brake hose removal help

[Earl Filter]

I'm doing some front brake work, and the brake hoses have collapsed internally. I bought new ones, but the old ones don't want to come off on the frame end. I got the caliper end off no problem. There's the smaller fitting that screws into the hose fitting on the inside of the frame. It's a 3/8" fitting. I've used PB Blaster to try to loosen it up, but neither the small fitting on the inside nor the 5/8" fitting on the outside of the frame want to come off. I'm afraid I'm going to round off the fittings if I'm not careful. They're not even corroded, but I can't get them to budge. Any ideas?