Anecdotally, I can confirm that Heal Pulse does NOT nullify the ability to wobble non-boss pokemen, as I've used it multiple times to wobble pokemon when I accidentally deleted my Endeavour poke.
That being said, the large pokemon on normal floors seem as though they will rather frequently have an "unwobbleable" flag, although it could just be the trait acting against the player.
That being said, the large pokemon on normal floors seem as though they will rather frequently have an "unwobbleable" flag, although it could just be the trait acting against the player.