whiplash to myself??

[MrPhysio+]

Hello Boriss,
This is a very interesting case given the various elements you describe on top of the Ehlers-Danlos syndrome.
To start, I do not know what grade of the syndrome you have been diagnosed with, but in general the type of stretching associated with a brachial plexus glide was probably a bit risky for your soft tissues.
Any high force applied to your collagen structures could compromise the tissue causing tearing, inflammation and bleeding. The following repair may then cause the fibrous tissue to become stuck together, tethered, which feels like a burning sensation the same as experienced during the initial tear. What happens is that the tissues heal by sticking to each other as a framework, then gradually the framework is taken away as the fibres separate during activity. The area between the fibres is raw to touch for a short time after separation.

It is possible that you have also irritated a branch of your facial nerve giving you TMJ pain, or you may have strained the TMJz ligaments. You will need specific deep massage to the ligaments if this is the problem. Sometimes ultrasound can help. Do you have TMJ clicking opening and shutting your mouth, or difficulty opening your mouth wide? A facial nerve problem is more difficult to treat.

The posture of the head, shoulders and neck can be addressed by a single exercise (see attachment).

The exercise has a built in progression. Mark am and pm on a calendar and put 10 secs 10 reps on the first day, then 11 secs 10 reps the second day, third day 11 seconds 11 times until you reach 20 seconds 20 times. Do the 20 seconds 20 times once a day for a week then reduce to a maintenance dose. Do not go straight to the maximum as all training effect will be lost and you will become too sore.
The exercise will mean you do not have to do the chin tuck exercise.
Hopefully the improved posture and muscle strength will help the TMJ problem as well by taking tension off the Cervical spine, but there is still a chance you will need the TMJ specific treatment.
Hope this helps.
Let me know if you have further questions.

MrPhysio+

Shoulder retraining and strengthening
1. In sitting - Place your fists on the seat at each side of your hips, and
slightly behind you.
2. Look forward keeping the chin level.
3. Lift your shoulders toward your ears, and roll them back and down
feeling your shoulder blades pinch together.
4. Keeping the shoulder blades pinched back, push down onto your
fists gently as if you are to lift your bottom off the seat.
5. Hold the position for 10 seconds, repeat 10 times at the first session,
and do 2 sessions per day.
6. Progress each day by increasing the number seconds held or the
number of holds per session on alternate days. For example: Day one
10 secs/10 times; Day two 11 secs/10 times; Day three 11secs/11
times; 12/11;12/12 etc
Over 3 weeks gradually build up your tolerance to eventually achieve
20 second hold and 20 repeats, twice daily.
Once you have achieved this level reduce to 20 seconds 20 repeats
once a day for a week.
Congratulations, you have corrected the problem by improving muscle
strength endurance & length as well improving posture. The next step is
to maintain the good work by doing the exercise occasionally.
Hints
Be certain that the shoulder blade pinch is maintained when pushing
down with your fists. Use a rolled towel each side of your hips if the
surface is soft eg a padded couch or bed.
If you feel muscle tightness across the abdomen you are leaning back
too far.
If soreness is felt through the neck you may be pushing down too hard
with your hands or not keeping the head level.
It is normal to feel exercise muscle soreness, especially when beginning
this exercise. If you are concerned regarding any symptom change,
please phone your therapist