Well, MoGraph can’t actually make the text conform to a sphere, so you have to bend it first and then clone the bent text. You were on the right track there but you needed to put the extrudNURBS and deformer inside of a null and then clone the null.
The current state to object command (under the Functions menu) will just turn the deformed, extruded text into editable geometry so the extrude and deformation doesn’t have to be calculated every frame for every clone.