ACARS at 1:07
If a plausible theory says that the 1:07 ACARS is that of the 12 minutes window to change a waypoint to do the westward turn. I wonder if it is likely the other subsequent waypoints of the new path that are keyed in would appear in the ACARS message? Afterall ACARS contains enough capability of interfacing with the FMC on flight path changes - in uplink and downlink modes.