It is certainly true that if we know A implies B, then knowledge of B will also confer knowledge of A. However, this is not enough to call it a logical implication, and given that the original saying used the terms modus ponens and modus tollens, a logical implication is obviously what is meant in this setting.
It makes a lot of sense for the Google people to be transhumanist, with Sergey Brin and Larry Page working with the Singularity University, but still I was surprised to hear this on the new Colbert Report (of the 23rd of April):
He seemed quite serious, too.
I guess a lot of people would take transhumanism more seriously if they heard the top people at Google are in. To me, I actually find it makes Google seem more trustworthy. In-group psychology is weird.
Here's another good interview with Eric Schmidt. No explicit transhumanism, but some fairly intense plans entirely compatible with it.
(edited: corrected title)