Sometimes you have to accept the bad that goes along with the good. You can attempt to remove the nest if you find one and hope you can place it so the birds will find it and your friend will not spray. If you find and don't attempt you will hurt mentally for a long time because if you leave the bushes the nest will be sprayed and the babies killed anyway.

Attempt to move or find a nursery that is willing to dig the plants up for the plants. I was just watching a show that moved a big roadie. They stated to dig a trench about 5 ft away from the trunk through the roots. Then use a trenching or they called it a transplanting shovel pointed inward toward the trunk to sever any roots that are attached to the under soil. They just moved to a different location on the property but you would need to wrap the roots in a couple of old bedsheets.

I do hope this was not a special friend. If he is perhaps it is time that he WAS a special friend.

I don't know if it'll help, but you could let your friend know that if the nest belongs to a native bird, it's illegal to disturb their nest without a permit.

Here is a link that might be useful: sialis.org page about Migratory Bird Treaty Act