Well 2011 referendum seems a very long term target. 2010 elections could be a more archivable objective as LRA has no logistical support.
Also, despite percistent rumours of guns flying all over the place, there has been light hard evidence of Khartum involvement in it, even of the happening of such thing. The one I know is tanks flying from Kenya to Rumbek for GoSS. But still does not mean it does not exist. Bad people even say that it is GoSS that is arming the place to undermine coming referundum...

Also take in consideration coming DDR schedule in South Sudan. That will ease Kony job to come in and out South Sudan.

Other thing to take in account is that burning the land for food supply works when you have food coming. LRA favorite target always has been humanitarian programs. For the moment, WFP pockets are dry and donors are reluctant to fund, this is a secret for no one. according to FAO, the coming season is hunger...

I do not know about Kony meeting in CAR but in DRC, he was still capable to coordinate multy target attacks while his groups were splited all over the place.