Some of those are familiar. I startle easy when I'm in those early days of withdrawal, for sure. I do feel off balance as well. General disorientation and insomnia, check.. The one that bothers me is the dysphasia, trouble speaking and slurring your words. Call the emergency department of the hospital where you were admitted and see what they think. A nurse can tell you if that's reason to come in or call your doctor and set an appointment.
Edit to add: I get tongue tied in acute withdrawal, too.