Ohh. Now I know what you're referring to. The box that appears when you MOVE an object. Gotcha. Yeah, hopefully there will be an updated plugin to deal with that. There's nothing within Photoshop, that I know of, that will turn that off.
Here's a time-saving direct download link:
http://download.adobe.com/pub/adobe/photoshop/mac/13.x/Optional_Extensions_Plug_Ins_Release.dmg
Place the "DisableDragBoundingBox.plugin" into your Plug-ins folder, relaunch and it's fixed. This was driving me nuts for weeks.
SInce I never want to see that bounding box under any circumstances, this plug-in does the trick. The caveat is: once installed, there is no way (that I can find) to toggle the bounding box back on. So if you do need it, you'll have to remove the plug-in. Thanks, Philip, for that Help page link.