I'm surprised about the 6mm causing a break. I wouldn't bend cast drop outs too much but plate or tubing no problem. There are frames built at 132.5 for 130/135 interchangeability. That means that 2.5 mm (not surprisingly) is not even a cold set, the extra 3mm, 1.5 per side shouldn't have done anything.

The problem with bending a frame 10mm is where the bend occurs. The materials can take it, it is a mater though, of where the bend is imposed. If parts are just spread apart there can be an excess concentration at bridges, etc... The real issue here is whether there is upside to messing with the frame in order to pick up the potential advantages of a stronger and better built wheel. Sounds like what you gain in strength and alignment in the wheel you will loose, more than likely, in the frame. It isn't that it can't be done, just doesn't sound like there is a good enough reason. 130 mm touring wheels are fine.