we are in now trouble now

Ok so here is the deal... Jake is not loving the fact that I no longer going in the pool with him at swim class. But I am holding strong and he just has to deal. So on Tuesday he was being whiney and making it clear he wanted me in the pool. I was sitting in the waiting room watching from behind the glass. He told his teacher that he had to go potty. They came out to get and me and he told me the same thing, "Jakee go potty", I am annoyed but I take him and sit him on the potty. As soon as he sits down he says, "all done, lets go home". So yeah he lied to get out of the pool. I took him back the pool and made it clear that Jake does not use the potty yet and he was trying to manipulate his way out of the pool. I am laughing at the situation, and then it scares me at the same time that he is capable of that kind of manipulation.