it is only natural to think it was Howie reading the commercial since he's a goto-guy for stuff like that. i have not heard Howie read an ad like that however, and I've listened daily for almost 30 years.
a glitch such as that reported here would be quite annoying to me if i had children in the car, and i would register a complaint too.
i registered a similar complaint years ago with comcast when everyone could watch everyone else's pay-per-view, before they scrambled digital pay-per-view broadcasts.
in the case of this siriusxm glitch, it does sound like someone was flipping a switch that ought not be switched during "production".
or that packet headres got jumbled briefly due to a software configuration/provisioning error or software bug. or gamma ray(s).