Ok, so I didn't invent this idea, but figured I'd put it up here b/c I looked around quite a bit before I found this as the only resolution to getting the elbowed shanks out of my crowded tower (2 taps).
If you're tower looks something like this (not mine, mine was worse with elbows on the shanks and closer together yet):
Then you need to make this:
Feel free to use a cheaper wrench - ACE was the closest place for me to run and not waste $5-10 on gas - so I sprung for an $11 wrench to dremel away at. I would say a 12 pt. wrench is required, but you could try with a 6pt. - I don't know what results you will get though.
I started by taking out 2 "teeth" with my dremel and a metal cutoff wheel. Amazing how easy it cut through this expensive wrench - LOL. That wasn't enough to get it in between my faucet shanks, so I took out 2 more teeth to get what you see. Went in perfectly on both shank nuts and I had them off in seconds.
Would work with 1 1/16" wrench just the same of course, if thats what size yours are...
Hope this helps someone save some headache. I bought a custom spanner wrench/tool from beveragefactory, tried needlenose, tried other adjustable wrenches. This is the only thing that worked for me.