here's a possibility of what might have happened.
Let's say that before the listening party, March 8th was the tentative release date for the single. Atlantic sent out this tentative date to a bunch of stations and this station put it on the schedule as fact. Then, around the time of the listening party, STP decides to push the single release back so they can tweek the mix on the song. Atlantic then sends out a release to all the stations they sent the tentative schedule to and gives them the new date, as well as officially announcing the new date to various news sources.
However; Q103, being run by amatuers completely incapable of the basic task of scheduling, either ignore the release or don't put the new date on the schedule. Then some poor bastard at the station see Between the Lines on the schedule and thinks the station is actually getting the single. So the do a shit load of advetising for the "world premier" only to find out they're not getting the single.
Whatever the case is, the singles date has been 3/30 for a couple of weeks now. If the schmucks were anywhere in the loop they would have known they weren't premiering the single. So they're either amatures or lying bastards... Or both
Maybe they should let "Lurch" the intern do actual work instead of interviewing "celebrities"