I don’t really see the point in antimatter suiciding. It’ll not kill Voldermort due to the Horcrux network, so it’ll just kill the Death Eaters but letting Voldemort in power, and Voldemort would be so pissed of he would do the worst he can to Harry’s family and friends… how is that any better than letting Voldemort kill Harry and manage to save a couple of people by telling him a few secrets ?
I don’t really see the point in antimatter suiciding. It’ll not kill Voldermort due to the Horcrux network, so it’ll just kill the Death Eaters but letting Voldemort in power, and Voldemort would be so pissed of he would do the worst he can to Harry’s family and friends… how is that any better than letting Voldemort kill Harry and manage to save a couple of people by telling him a few secrets ?
The point is to destroy the Stone and Voldemort’s body, which should earn time to the Order to react.
The longer explanation said that it was bungled, that the antimatter blew before the transfiguration was finished.