He made a personal announcement like any other player but it's usually accompanied with AD's formal announcement to the media which publically cements the deal.
The fact that the AD has not formally announced Zeb's departure only leaves open the questions on whether or not they could still be attempting get the extra year of eligibility and persuade him to stay.
If, in fact, he's really gone..the lack of a formal announcement serves as an unnecessary impediment to obtaining an experienced PG from the portal.
PG Agents may be dissuaded from taking VCU's phone calls simply because VCU hasn't definitely said Zeb is no longer in the picture.
VCU should spend 15 minutes cobble together a formal announcement for the RTD, leave no doubt, and then pursue an experienced PG from the portal in the strongest negotiable position.