Hi Kimmie,
well first how wonderful that you have enough pain relief that you can go extended times with it off.

I have not had my unit turn on by itself although there are certain automatic doors will turn it off for a good two minutes. There are times when it is OFF that I do feel it in a low buzz. Once when I had a bad cold I had a full shock thru the lines when I went into a coughing fit....and it was OFF.

Since you actually had to get the remote to turnit off....my guess is something electronicly in your vicinity triggered it on.

another mystery
Johanna