This. That CLA does not assign copyright, so they can't relicense. I'm sure they know that though and either scrubbed those out at some point or are pursuing other ways of monetizing it.
It is interesting to me that an open source project would be acquired, which is literally the trademark and copyright. However since the copyright is literally governed by copyleft they really can't change anything unless every contributor agrees or they actively re-write the code that scrubs non-agreeing contributors.
In any event someone could fork today, and rename it Cuddly Server as long as the copyleft stays in place. See Jenkins/Hudson.
