I think it is a little early to say for sure what Obama's policy will be. He has said he doesn't want to waste federal money overriding the policies of individul states, but since that is definitely a shift in policy, it will take some time to implement.

It may well be that these raids were an attempt by some element of the DEA that disagrees with the new policy to get in a parting shot or force an issue before the new policy is introduced. Or it could just be a timing thing with long term operations that were already under way for some time. I would not read too much into it unless the trend continues. It takes awhile for new policy to get set, communicated and implemented throughout a bureaucracy.