It would also explain why Ben's mother is alive on the island. If she is actually alive... Creepy!

But who would have gone back in time to get her? Not Ben's father. He was pissed off that the Dharma Initiative wasn't letting him in on the big projects. Not Ben either. Could it have been Ben's dad's friend who got him the job on the island? Which station did he work in? Maybe she was a first experiment and because it went wrong somehow, she wasn't allowed back in the compound and her presence on the island was kept secret?