Who texted what to who and when is probably going to require forensic examination of both phones. If this has not been done already this may not be a one day event.
If the ARU does not have the second phone this may all become just way too hard to get any determination from the Tribunal. The clause in the Code requiring an experienced judge or legal practitioner may prove to have been well thought out after all.
I am assuming this is the Code of Conduct we are talking about.
http://www.rugby.com.au/LinkClick.aspx?fileticket=3cJMoqgJdXg=&tabid=1968
If there is seventy pages of evidence one might assume some other issues will be canvassed which might be considered other breaches of the Code of Conduct.
If they cannot get a crystal clear outcome the ARU is going to have to be very open about the reasons why.