I use Go Launcher but I don't use the Iphone theme (actually not sure what theme I have... I guess stock Go Launcher, though I have tried other Go themes, I didn't really like them).
First, just clarify how I understand your question: you are concerned about app movement - being able to drag and drop apps into folders, right? (I.e., you don't really care if they shake or not. If you just care about the shaking as a visual signal I can't help you but maybe someone else can...)
So, for me, when I press and hold an app icon on a home screen it allow me to move that app icon and I can then move it:
a. to another location and if that location is occupied it pushes that icon in the destination spot someplace else to a free area (and if it is a full screen, it will switch places with the app icon you are moving.
b. into a folder - drag and drop works, I just move the app icon over the folder and release and the icon is moved into the folder.
Inside a folder, the app movment seems to work just like an iphone: all app icons are moved as far as they can to the top orders them from left to right, and then to the next row when the top row is full. When I hold and select an app icon and then move it, it just places the app a different place in the order so all the other apps "behind" the new placement get pushed 1 spot further back (i.e. to the right and/or down).
I'm guess this isn't the info you really wanted but maybe you can clarify your question further...
On the home screen the movement when I drag it