i am a landlord, a tenent is threatening to take me to limited civil court if he wins or loses his small claims case, to retrieve his $2000.00 deposit

Yes, a small claims case is appealable to the superior court.  Did you make proper deductions and send the tenant a statement itemizing the deductions from the security deposit along with receipts for the expenses and the remainder of the security deposit to the tenant within 21 days of the tenant moving out?  If you did, then you don't have anything to worry about.  If you didn't, then return the money.