@Propduffer
Who is "Steve Winter", and where does he get the location of the "last radar sighting of MH370 from?
Mr Winter seems to have a good Internet presence, e.g.
ATCA Technical Writing Awards
The last radar sighting at 18:22 is shown in the ICAO report maps and in the slides shown at the Beijing meeting a day or so before. Agreed that the lat/long position of the 18:22 sighting seems to have moved West since previous reports.