OoTS 655

[SPoD]

but Redcloak just teleported out to God knows where, and the very same Cloister effect prevents him from teleporting back in.

Unless Redcloak's sanctuary is someplace within the city. Creatures can teleport within the area of the Cloister, just not into it from outside.

Is the strip coming to a close, or is this another climax to be followed by another long period while the plot rebuilds?

The strip is not coming to a close, no.