As far as I'm aware, no, there is no other way to turn off snapping without out shutting off the grid other than using alt. However you can right click on a token and set it to "Is Drawing" under the advanced options and it will no longer snap to grid. Be aware that tokens set as such will be removed if you choose to clear drawings from the map, though, and I don't think they get the three bubbles popping up when you select them. You can double click on them to get to their settings, though..