That would work too. All comes down to who is healthy. I highly doubt Dana will want Hendricks sitting on the sidelines for 6 months or more waiting on GSP. Feel bad for GSP though, looks like injury probably be the thing that ends his reign. This also makes the super fight between him and Anderson Silva to never happen.
You start having leg injuries, the last thing you want to do is gain a lot of weight. And I highly doubt Anderson can drop down to 170 at his current age.