The right table on tr_events.php only shows sendto.
In the case of sending a SMS:
"03 Feb 2012 14:25:07 SMS sent 446648102623210 Subject: ..."
This leaves the spectator with no clue and no easy way to find who's phone number that is.
Using the submitted patch, the user alias appears underneath the phone number (or whatever) in brackets:
"03 Feb 2012 14:25:07 SMS sent 446648102623210 (big_brother) Subject: ..."
The code looks a bit different in some section in the trunk version. I don't have the time to adjust it at the moment.