Yes, there is a caulk-softening/releasing type of stuff that works well
I can't remember the name of it, sorry
It's sort of like an "over-caulk" type deal
You squeeze it out over the existing caulk, you wait a little, then removal should be much easier
It may be helpful in this type of situation
I'm sure you'll need to go to a local Paint Store where contractors shop to find it
Certainly it would be worth a few phone calls to some near you to see if any carry it
"Contractor's Solvent" also may work
http://www.orange-sol.com/contractors/index.html
The stuff works great on old mastic and other cured stuff like that
But I've not tried it on caulk myself (though they say it works)
It's more of a liquid, so not quite an "over-caulk"
If the other stuff is not available, it might be worth a try
Regardless of the product used, there will be some decent glass clean-up after
I'd still go for a "caulk remover helper" and the ensuing clean-up, rather than "glass replacement"...unless the removers prove ineffective
I can't remember the name of it, sorry
It's sort of like an "over-caulk" type deal
You squeeze it out over the existing caulk, you wait a little, then removal should be much easier
It may be helpful in this type of situation
I'm sure you'll need to go to a local Paint Store where contractors shop to find it
Certainly it would be worth a few phone calls to some near you to see if any carry it
"Contractor's Solvent" also may work
http://www.orange-sol.com/contractors/index.html

The stuff works great on old mastic and other cured stuff like that
But I've not tried it on caulk myself (though they say it works)
It's more of a liquid, so not quite an "over-caulk"
If the other stuff is not available, it might be worth a try
Regardless of the product used, there will be some decent glass clean-up after
I'd still go for a "caulk remover helper" and the ensuing clean-up, rather than "glass replacement"...unless the removers prove ineffective