This is all very random. I think something's up because it's clear to me the WWE wants Cena to be fully healed from his injuries come the Road to Wrestlemania. If he does wrestle, it'll probably be a quick match and then Sandow will cash it in and then they will find a way to pull Cena out again until RR.
Nah, didn't stories come out at the time saying that he could come back in as little as three months, but they were basically thinking about just giving him more time off so he could finally rest up and chill out a bit?
I remember him saying the surgery was very successful, and I think easy.
Someone can find old articles. I'm almost certain that I read that he could come back within three months. HIAC falls right within that timeline.