I have a strong suspicion this is a deal state prosecutors made with the feds. We’ve seen this before. The state drops charges to allow the feds to step in with stronger charges. This happened with the New Mexico compound where there were 14 kids in squalor and a dead 3 year old. State charges for murder were not brought, and the child abuse “holding” charges were dropped. The feds are now prosecuting all of the adults for terrorism charges.
I think there is a good possibility that the federal investigation into Jussie’s “White powder” terroristic threat letter is concluded, and federal charges are imminent. JMO. The state charges would typically proceed first, so by dropping them, the way is open for the feds. The state can always re-file charges in the future if they wish since he was never tried.