Well, with Widmore, he did persuade Locke to go back to the Island, but he told them that he needed to go and "recruit" all of the Oceanic Six to return as well. So, if he wasn't on Jacob's team, and wanted to provide the means to kill Jacob, why did he want all of the Oceanic Six to return as well? This has me perplexed. But, I agree, I am thinking that Widmore is on his own team. He definitely is afraid of Smokey, as we see his crew building the perimeter fencing to keep Smokey out.
Are you thinking that the "war" has been won then, by Smokey? I definitely have the feeling that the war is imminent, but has not yet begun.
Remember we had the boy that appeared to XLocke, first with Richard there, but only XLocke could see him, and he appeared then with blood on his hands. Then, later, he appeared to XLocke again, but Sawyer saw him as well. After giving chase, the blonde boy reminded XLocke of the rules, that he couldn't kill him. I assume that it means that XLocke cannot kill the candidates.
We know that Jacob was the protector of the Island, and that ONE of the candidates will become the new protector of the Island, and perhaps the nemesis of Widmore. We know that Widmore wants to "possess" the Island. Will we eventually see one of our candidates take on Widmore in the "war"?
If this is to follow though, why wouldn't Widmore have killed Sawyer on sight, as he's one of the candidates?