Knowing how difficult it is to remove anything applied to glass, I would say that it is easier to swap the glass over. 
Martin
Cheers Martin 
I was considering using an abrasive paste like cutting compound.
The problem with glass is that the surface is microscopically pitted, which is how a fly can attach itself to climb up it, and any substance like paint or adhesive will become embedded in the surface making it virtually impossible to remove completely unless you could get the right solvent to remove whatever is on there.
One of the problems we have at work is where a customer has tried to clean glass with the latest 'wonder' product and they are left with a residue which just can't be removed. They blame us saying that the glass is faulty, it's funny really when we cut over 300,000 m
2 of glass per year and only get the problem on one house here and there.
Occasionally, we will use a very fine abrasive compund, known as 'jewellers rouge' in the trade, to remove fine scratches but the amount of effort involved, to achieve less than perfect results, is seldom worth it unless there has been a lot of work put into the glass in the first place.
As I said, it's probably worth swapping over the glass as you may end up ruining the glass that's got the tint on it at the moment.
