Brandon "Kayaba" Fairing was a member of Shotbow staff for only a short while, but in that time he managed to develop a grudge and:
Leak Proprietary Software
His grudge? He claims that Shotbow owes him $8k, at least some of which would be for the period of time in which he himself ended his employment
Brandon "Kayaba" Fairing is mentally unstable and malicious.
BE CAREFUL OF Brandon "Kayaba" Fairing
But who am I to make claims without providing proof?
This information retrieved on 2017-07-09 as the (expired) WHOIS for one of his domains: terrariareforged.com. Wayback Machine Link
Do you see that email? kayaba @ yourfunworld? That's very important because the domain in which he leaked the software: TotallyHighlife.com is also registered to a yourfunworld email:
This information retrieved on 2017-07-09 as the WHOIS for totallyhighlife.com. Wayback Machine Link.
While there is no site at YourFunWorld at the time of this writing, you can still see posts by Kayaba using the Wayback Machine.
Posting to twitter about it:
Linking to the proprietary software (note the bar indicating the url of the link):
ZIP File containing the proprietary software