Owner Threatening to sue EC

The EC had to make a very tough decision on a matter.  An owner got hold of the ECs e-mails.  One of them indicated that this owner has been told not to work on strata property as he is unlicensed and not insured, but continued to do this.  The e-mail also indicated that the owner continues to push his bad habits onto new, unsuspecting residents and hence tampered with common property.    From this tampering, the new owner will get a replacement of an item which will be quite expensive.  Can the owner who has taken offence to the e-mails, just sue the writer of the e-mail or does he sue the whole EC that the e-mail was only intended for.  By tampering with this common property to get a replacement rather than a repair, be considered fraud?  Can the fact that he obtained e-mails not meant for him be used against him if he tries to pursue the matter?