"I have to reiterate my objection to pruning this tree in order to "lighten" the load. I believe this is a short-sighted, ill-conceived attempt to correct a non-existent problem."
Brett, I suggest that you look at the picture again. that lead is super-heavy and sprawling. From the BMP's (someone who considers himself an authority thought this was an acronym for a product? :taped: that's kind of funny, and scary in a way) page 3:
"Pruning may remove structural defects or *lighten the load* on tree parts with high risk of failure. On larger and mature trees, the combination of pruning and a support system may reduce the risk of failure."
From the Pruning BMP's page 12: "...limbs can be reduced to balance the canopy, provide clearance, or reduce likelihood of breakage on limbs with defects...Reducing or thinning should be considered if cabling would be performed."
Brett when you look at that end you can see that the tips are folded in on each other due to the change in lean. Those leaves don't get the sun they used to, so they don't make food like they did, so they are more exendable than they were. Is it better to let those leaves shade out and shed?
You could take off 10-15% from that end, all small diameter cuts, and have it look better than it does now without costing the tree vital food. You've got good reason for fear when you hear someone say they want to "lighten the load" on a tree--too often that has lead to topping. Proper thinning and reduction, which this tree badly needs, are different.
Don't fear arboriculture.