According to NFHS rules: Rule 2-4-6
"In stunts that require a spotter (which in this stunt the backspot is the primary spotter), a spotter must not: a)grasp the sole of the top person's foot. b) Grasp the bases's(s) hand(s) under the top person's foot."
Looking at this rule. At least two of the stunts have an illegal hold. They may have received just a warning being early in the season but they are illegal. This is the same thing that cost Whitewater a place at region.
Hope this helps!