I don't always want it aligned, just moved. So the plugin's not a great deal of use, unfortunately.
I've been using the cursor keys to move a pixel at a time, but for more than a few it's just too much hard work, and sometimes I need several inches (so move it by the mouse and use the arrows for final adjustment)! But they eat memory as well, as all the single moves have to be remembers in case of an undo. What's needed there is (say) shift-arrow to move by (say) 10 pixels.