Smoked, seared tri tip frozen reheated for sandwiches

We had a huge tailgate a couple months ago and I had 4 tri tips in my WSM smoked and then seared for sandwiches. I saved a few lbs of unsliced and vacuum sealed into freezer.

My son is home from college break and had 8 guys over for poker so I got them out, tossed in sous vide bath at 120° for about 90 min. I made some homemade slider buns while waiting for meat. Then fired up grill hot to give them a bit of a quick re-sear. Used some horsy and Ws for a quick sauce and they loved them!