Not understanding anything you're posting. If this is a car, and a caliper froze up I'd suspect moisture in the brake fluid and or worn or damaged seals caused corrosion. Same with the bleeder. If it's a steel bleeder in an iron caliper broken off flush and you want to try removing it, my method is multiple applications of a torch, water quench, over and over. Last time just let it air cool and soak in penetrating oil and let it sit overnight. Time and repetition is your ally. Don't even try the ez out till you've done the above.
I Just replaced one caliper on my car with a snapped bleeder because it was a low cost and faster option.