Since I have a lot of faith in the people who manage GIM, I would not get excited about this change. I would guess that the use of currency derivaties would allow the manager to create synthetic positions in bonds where buying the actual bonds is either impossible, expensive or undesrable. For example, suppose you want Euro exposure but don't actually want to buy a specific sovereign in the EU. You might buy a US corporate bond, pair it up with a EUR currency forward and synthetically create a Euro denominated bond that does not have direct exposure to any of the EU sovereign credit names.
"To be a man means that you are brave, loyal and true. When you are in the wrong, you own up and take your punishment. You don't take advantage of women. As a husband, you support and protect your wife and children. You are gracious in victory and a good sport in defeat. Your word is your bond. Your handshake is as good as your word... When the ship goes down, you put the women and children into the lifeboats and wave good-bye with a smile." C Murray