Trees like the ones you have in your picture are a common occurence for line clearance trimmers. One of the biggest misconceptions is that "burners" like this are rare. A lot of people think that 2'4" is as close as you, your tool, or the branch, can get to the conductor. A trimmer or foreman who called for a line kill or grounds on trees like that would soon be out of a job in this neck of the woods. I have met trimmers from back east who say the crew shuts down while it rains. Out here in Western Wa/Or, it rains more often than not, you work no matter what.
I've got some pictures of some trimming I'll be doing that I'll post soon, some single phase near Spruce trees that has been skipped for several cycles.