the ban cannot be held any longer as now another institution that supports Dorje Shugden comes up to herald the victory of Dorje Shugden against the ban. I mean, the Dalai Lama is banning something that cannot be banned or suppressed, so the only reason why he is "banning" Dorje Shugden is to promote him via reverse psychology as people of this day and age are more receptive towards negativity than positive things. Also, it would be very odd for the Dalai Lama to promote a Gelug protector (although in reality he is not, but to commoners he is) it would hurt the sentiments of the other traditions, so the Dalai Lama had to "ban" Dorje Shugden in order to promote him.