Wow, Sasha. He really is the gift that keeps on giving, isn’t he.
I must confess I laughed out loud at returning a year-old unused hot tub...to Costco no less...but I also feel so bad for the underpaid customer service guys on the receiving end of his return policy.
Get rid if the stuff in the easiest way possible...maybe to a DV shelter charity or something. Getting to “done” via the shortest route is a worthy goal; god knows you’ve paid your dues with all of this.
Sending you a hug.