medications can cause all sorts of weird and wonderful side-effects...
Beyond that, though... I don't remember... Has he had an Occupational Therapist (OT) evaluation yet? (sensory and motor skills)
Because... he's giving fairly consistent push-back against motor skills tasks... writing, PE, etc. Maybe he "can't" do these things, or these things take way too much effort to do... in which case, the behavior makes sense. (Most teachers take motor-skills push-back as "attitude", in our experience. Which then compounds the problem... because then the kid gets a REAL attitude about the incorrect label...)
