Sorry bro. Was busy and didn't log in to PG for almost a month. Can you elaborate your statement? Like are they using PIE now?
As for TW1 itself, I don't remember anything happening to TW1 during January so most probably an issue in the national network. All mobile operators (except Ufone) get their primary bandwidth from TW and use PTCL as a backup. They have physical fibers in active/standby modes connecting them to TW, and even though it's highly unlikely to lose both active/standby fibers, it does happen and the systems switch over to PTCL (PIE) for routing if they are configured for it.