My understanding is this only means that you'll never be able to build JB from source for the Sprint GNex, and has no effect on whether JB is coming as an OTA. CDMA Nexii phones have never been able to be built from source, so nothing has changes in that regard.
The real story here is that Verizon worked out licensing with Google to allow the Verizon GNex to get ASOP support. Similarly Sprint worked out licensing with Google to allow the Nexus S 4G to be built from source.
Someone correct me if I'm wrong, but the whole "JBQ said the Sprint GNex won't get ASOP support" story has been blown WAY out of proportion. No one ever expected any of the CDMA Nexii to get ASOP support.