If you cannot get it out, it's very likely so corroded you need a new caliper anyway.

It is stuck pretty far out? Can't be, if you had new pads in there, though.

As a last resort (understanding that it's likely far too corroded to use), try tapping it sideways back and forth in the bore, alternating this with prying up with a pair of small prybars.

I would definitely look for a new caliper, though (used is fine, just do the rebuild on it).

Heat sheilds do just that -- sheild the rubber parts from the heat generated by hard stops. Makes the rubber last a lot longer.

Peter

__________________
1972 220D ?? miles
1988 300E 200,012
1987 300D Turbo killed 9/25/07, 275,000 miles
1985 Volvo 740 GLE Turobodiesel 218,000
1972 280 SE 4.5 165, 000 - It runs!