Since the post was made on the forums i had been testing various macros attempting to recreate the exploit. I was unable to however in my searching and testing I found this add-on,
Personal Sentry (ICU) | World of Warcraft Addons | World of Warcraft @ Curse.com
It works just like the exploit macro allowing you to target any stealth class once they get within 40ish yards. I will be testing various scripts from the add-on to pinpoint what worked just wanted to post this before i went to bed.