Comment by lxgr

This has more details: https://fcc.report/IBFS/SAT-MOD-20131227-00148/1031348.pdf

Apparently it only happens above/below 68 degrees latitude, so the next satellite with a working inter-orbital-plane connection is at most one hop ahead or behind.

https://spaceflight101.com/spacecraft/iridium-next/ has some more photos and diagrams; seems like they're really mechanically steered even on the NEXT constellation.