only give you my common senses for your references:
1)To consult with your own attorney who shall have specific experience in that field;
2)Sorry for what has happened but you have to deal with it. If there is nothing to hide, a deposition is no big deal, but a headache and a major distraction from your current job;
3)If needed I can call my lawyer for some info. for you?
4)What 中国律师 said here makes sense.