Ok, I looked into this a bit more and it seems that Logitech will only allow a maximum of 6 commands in the power off sequence. So you are not able to put in 9 left commands. I believe that I have figured out a workaround for this. You can get harmony to add a duration function to a specific button press. So you should be able to use one left press with a duration of a few seconds to get the remote to move all the way to the left of the XMB. Then you can add three up commands and two X commands.
I have not been able to test this out yet, I should be able to within the next couple days though, and I will update this thread with the results.