Sals, I guess this is because it's a "raw" recipe and so the temperature shouldn't go so high that the enzymes/nutrients etc are "cooked". The 37 just helps you to keep an eye on the temp.
I haven't made almond butter but I know that peanuts get quite warm when grinding to make peanut butter. So if you're not to bothered about your almond butter being raw, just grind away until it's at the consistency you like. I start at speed 8 until the nuts are pulverised and clumping then drop scrape down and continue grinding at speed 4/5 till desired consistency.
Have fun experimenting.