Yeah, Eddings did hold a pretty significant non-voice work role at Gearbox.
Eddings’s previous role at Gearbox was Vice President of Strategic Partnerships & Licensing, where he worked with retailers to distribute merchandise and even had talks with film producers about potential movie deals. Tales from the Borderlands happened, in part, because of a deal Eddings struck between Gearbox and Telltale Games...
It appears that Eddings had not wanted to continue doing the voice work for Clap-Trap:
In an interview held last September with Destructoid, Eddings wrote:“I have absolutely given up doing Clap-Trap,” Eddings said, a stern inflection in his voice. “The only time I’ll do the Clap-Trap voice is when I can make a kid smile and if it’s something of value to them. For me, I’ve got a lot of work to do at Rooster Teeth Games and there’s no reason for me to go back and revisit anything. I wish them [Gearbox] the best, and it’ll be interesting to see what they do, but no; I will not be reprising my role for Clap-Trap in any video game.”
Source:
Destructoid interview published in September 2018As I say, I'm not eager to defend Pitchford. But I'm also cautious about laying into him in this case; at least whilst the available evidence seems to be extremely unclear.