The story doesn't mention a GPS tracker...so I'm assuming he didn't have one.
It still astounds me that we have pilots flying remotely (or anywhere) without trackers. EVERY general aviator should be carrying one of these:
SPOT SATELLITE MESSENGER :: HOME PAGE
To do otherwise is selfish to your loved ones...and irresponsible behaviour towards the taxpayer that will spend many more $$$ than necessary trying to find WTF you are!
PG