XH contacts kids:any thoughts

[peacetoday]

Hi
My Xh went into MLC almost 9 years ago
6 years ago he married OW and moved with NO contact-his choice


THis weekend he or his wife tried to contact them over social media
Both my kids are stable in school and on right path
His wife (I've heard) is mentally unstable -possibly drugs
XH may also be on prescriptions or booze--not sure
I feel in my gut it is her contacting them,,or they did it on a weekend binge with little thought
Social media does not seem appropriate for a unavailable parent to reach out for the first time in many years to children they do not know
On the other hand, I am kind of shocked because for many years,,they have stayed hidden with little contact even to his sisters and family

any thought s appreciated