Overheating these can be VERY bad. Usually if its bad enough it will warp the head. If you got it hot enought to kill it, chances are......................
As far as the restart, it may have cooled enough to give a little more life, but without a compression test I can only guess.
You also may have something in the ancillary drives locking up (AC compressor, alternator, power steering pump) causing a drag on the engine and contributing to the overheating.
If it were mine, I'd take all the belts off and check each bit first. Leave the belts off, do a compression test to determine the condition of the engine itself and then go from there. If the engine is toast and you have to pull it, you'll have to disassemble the belt drives anyway.
In addition to the water pump, I'd do the thermostat as well, possibly the hoses depending on condition, and pressure test the radiator. Can't remember if the 1.8 had a timing belt, but if so I'd add that to the list.