To Pull it or not to Pull it

I just found a small splinter of wood imbedded in the side wall of one of my front tyres, Wile I was changing the front pads , Was most likely picked up when I was at Cape Arid a few week’s ago.

Had a small pick at it and it feels as thou it’s in there fairly secure, so I am at a bit of a loss now as the tyre is not loosing any pressure and it’s been in there for a little over 1800k’s minimum so should I just leave it be. Or pull it out and risk devolving a leak.

Is it unsafe to leave it in there, If it was in the tread would not be to worried over it but at it’s in the sidewall I am a little more cautious.