my son has the funky hand movement thing, too. it was at its worst when the PANDAS first blossomed and took over his world three years ago; now it comes back in a less-intense form. but, it is one of the signs we look for to see if he is having problems. as an aside, we have given up on strep tests--in our experience, our son can have a recurrence of symptoms if his immune system is taxed from even a cold or the flu--we haven't found it to be limited to strep infection, except for the initial onset (scarlet fever, asymptomatic strep for months). just a thought. good luck to you.