I'm absolutely on board with this assumption. The Rakethorn we saw going chin out to save the Queen's citizens was the proper one. The one freaking out over a few ghost pirates and doppelgangers wasn't. Spidey took over the wrong body at the wrong time because it was a target of opportunity. Not sure if the spider was before or after the pirates, though: Jaeger's are a heck of a lot more competent than you'd guess based on their off-hours antics.