it seems to me that a very easy and safe way to remove a bonded safety glass would be to submerge the face of the CRT about 2" deep in a pool of solvent (mineral spirits at the mildest, ranging to MEK at the harshest).
No heat, no physical prying, low amount of danger. The only downside would be having to wait, but then again these sets have been sitting for 30-years, what's a few days? I suppose you shouldn't toss lit cigarettes into the pan or let your cat drink the mix either, so do it outside in a shed or something.
Is everybody just so impatient that they must break out the blowtorch and prybar?