I have been on sick leave for 14 day and now employer has demoted me from my position for 10 years for no reason and having them go thru my office and leaving my site with confidential info which I now feel violated and feel constructive dismissal is in the works

That very much sounds like a constructive dismissal. You could be entitled to significant compensation for severance, and you could also potentially be entitled to compensation for breach of your human rights.

I recommend that you get in touch with us as soon as possible for a consultation.