Hi Jeff,
Welcoming you to Mystic Board, and especially to the psychic forum. Nice to meet you, and what a good question it is that you have asked as your first posting?
Were you deliberately attempting to induce an OBE at the time?
Please note that this is NOT a reading as such. All reading requests must be posted in the psychic reading forum which is here.......
http://mysticboard.org/viewforum.php?f=62
My educated guess (though I cannot prove it and am not intuitively reading it) is that your shoulder was being energetically manipulated and treated by your healing guide just before you heard this loud sound, in combination with one or more spirit doctors who specialize in reversing the damage to joints caused by your injuries, and sometimes by the physical surgery itself.
Have you ever nearly fallen asleep then someone has suddenly shaken you or spoken to you in what sounds like a loud and disembodied voice?
It is believed when this happens that your spirit or consciousness was in the process of separating from your physical body, but this has been dramatically interrupted which makes it snap back into your body like a suddenly released stretched to its limit rubber band, frequently causing a loud sound of an explosion or the crack of a whip to be heard in the inner ear.
Also you may be extremely anxious, heavily perspiring and may involuntarily lash out and punch the person who was responsible in the face if they are not quick enough to escape. In other words the sudden suspension of the separation process which was going on before it was rudely interrupted (the prelude to the OBE) causes a sudden and uncomfortable or even painful psychic shock to your spirit.
When the spirit doctors and your healing guide prematurely it seems began working energetically to treat the shoulder on which surgery had been performed it had the same effect as above. Your consciousness or spirit body drops back into your physical, within the period of a few milliseconds.
The serious jolt and loud noise and re-emergence of physical feeling and pain as the spirit re-enters and is brought back into full control over the physical vehicle is a common reason why when a person has had a Near Death Experience (NDE), many say that they did not want to come back here.
But if it is not their time to die or they still have work to do or people who love and need them, the discomfort, pain and loud noise when returning to one's physical frame is seen as a necessary means to an end. Since you are still here it was not your time to depart this mortal coil (kick the bucket, expire, or the D word), there is work still to be done and only you can do it, and there are one or more reasons or people keeping you tied to this world and your body at least for the short to medium term future.
Please let us know if there is any improvement in your shoulder as a result of this spiritual healing, and especially if this ever happens again. Something as simple as you going to bed 30 minutes to an hour earlier than you normally do may prevent you from ever having to go through this disturbing experience again, but your shoulder can still be treated from the Spirit side without any further interruption.
At the moment however your sleep is not yet deep enough to prevent this psychic shock from continuing to be a potential problem, but 30 or 60 minutes later your sleep will by then be deep enough that a sudden awakening and the associated psychic shock are both highly unlikely as a result of your ongoing treatment.
Sweet dreams,
EoT :smt015