Dear Kumar,
As per the above post of Mr. Ashish only cross examination is sufficient to tear the case.... may be it is possible. You may try that option with appropriate priority. But better to be ready with your own evidecne to support your calims those may help when nedded else no one can hep at that stage. If your opposite side witnesses are smarter than your lawyer or if your lawyer coluds with opposite side then.....?
Hope evidecne has somevalue in court of law. And always people say evidecne is required to win the case. I may not be the expert to give complete information but clearly can say that if you have evidecne in support of your version, that you may need to secure before it destroys, we do not know what happens in cross and if any requirement of any evidence/document required at that stage and if will destroy by that time, need proper effort from your side.
Finally if you produce your evidecne in support of your case and your version then the Hon'ble Court has to say that your side material is invalid on relevant gorunds.... at that time Hon'ble Court see your side material to protect innocents, if applicable.....