Perhaps they are slowly phasing out the Wolf name? I just heard a traffic update on 95.5 with the woman doing the update using the 95-5 the Wolf name (and "Leader of the Pack" traffic which I presume was a Wolf name tie-in?), and there are liners running saying "95-5 the Wolf is WSM-FM" that seem to run every 15 minutes or so, not as a legal ID but more to let listeners know that the name has changed but the music is still country. Besides that, the new "95-5 FM WSM" name is what appears to be primarily being used, including by the jock who said it exactly like that three times in one break a few minutes ago without once saying Wolf.
As for the website, it still says © 2009 Cumulus Media Inc. at the bottom, so I wouldn't read too much into Wolf references on there. Moreover, if it is a slow transition, that would simply be part of the change.