Glad you are OK. It's been about 22 years since I tread around them highways regularly...you can have em!
I know the feeling. I had the exact same "almost" crash on I96 this summer...rear tire got flat, lots of fishtails, trucks nearby...but for the Grace of God I was able to get it to the shoulder upright.
Cheers. Happy Holidays. Get better soon.
I think the only real therapy is to get back on the bike and get the confidence back. I'm trying on mine...