The Angels put the Well of Souls on freeze when they arrive – in fact, that is their primary purpose. But before the Well of Souls is taken offline, their chief architect has already managed to produce the first mathematically singular world (mathematical and mental equivalent of a black hole? – A vacuum bubble in a new realm of mentality, which the transsubstantiated can populate and expand with their own minds. Unlike the unidirection nature of data transmission in a black hole, these new “planes” intersect on a line through which minds can pass in multiple directions. The first mind in the key (the chief architect) took this trip, other followed to become visitors in this new mindplane, but there is no reason more could not exist)
Tal’s defeat of the Angels revolves around the Key of Adam – she doesn’t reactivate it, but uses it somehow to undermine them and cause their ascent. Somehow this also needs to be done at the Barrier, or in some way defeat the barrier.
Power is removed from the Well
When the well is finally discovered by archaeologists and brought back online, those who disappeared into the singularity see the flow of data and send alts to return and evangelize the new process.
This is the huge announcement made at the convocation of gods and priests.