NL100. 99 against an SS who seems to be on tilt

[BarryLyndon]

This an easy call?:

I have 15 hands in with villain up to this point. He has raised 6/7 times. Of the 8 times I have played from the button, I have folded three times. I have raised with reasonably good hands the other five, and he's three bet every one.

Villain (52.50)
Hero (100)

Villain raises to $4 in SB, Hero with 9d9s raises to 12, Villain insta pushes all in.