Just putting my 2 cents worth in..
I had a similar issue here, and found the last command helped solve the issue.
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15:01:40.804 AppScannerSupport PAUSE
pause_on_headset USB disconnection/AA
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15:01:43.597 AppScannerSupport PAUSE
pause_on_headset USB disconnection/AA
==================
15:02:25.546 AppScannerSupport PAUSE
pause_on_headset USB disconnection/AA
==================
15:02:28.411 PSMediaSessionHelper.Callback onPlay
com.google.android.projection.gearhead
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15:02:57.316 AppScannerSupport PAUSE
pause_on_headset USB disconnection/AA
I then went to Settings, Headset/Bluetooth, and disabled "Pause on Headset Disconnect"
All other options I triedthat were suggested here in this thread did not work.