Forget about the slingshot, Shelley.
I'm envisioning something more like the contraption the ladies in "9 to 5" had their boss wearing, and hooked to the garage door opener.
Nah, seriously, you have to keep praying for "those who despitefully use you" or else (as has been said) the strong emotions will poison you from the inside out. It's dang hard, but it really works.
You may look back a year from now recognize this time of tribulation as a blessing. I pray for you and your DH. I'll let YOU pray for the boss (kidding).