Bali,
I've been giving your situation a lot of thought.
This morning, I googled "recurrence T1 G3 with BCG" and the first thing that appeared (VOILA!) was a 5/2007 slide show presentation by Dr. Lamm. These slide shows are hard to interpret without the corresponding presentation, but the main ideas can jump off of the page in a very concise way. The slide show addresses your problem, but, Dr. Lamm puts some question marks in there, so it is even harder to interpret.
Still, Dr. Lamm has done some great research and he is the man.
If it were me in your situation...(and I'm probably not too far behind)...
I would write to Dr. Lamm and get his opinion.
Here is the link to his web site where you can pose your question. He has kindly replied to me twice with my own queries....
www.bcgoncology.com/drlamm/askdrlamm.html
Here is the link to the slide show presentation
www.bcgoncology.com/physicians/TCCF20070522.pdf
T1 G3 is such a dangerous disease because it can go either way. The fact that you have had multiple tumors, recurrence, and that the BCG has "failed", puts several different slants on your individual situation.
Take care. You are on my mind.
Your friend,
Ro