Vindictive manager may have moved on, should I leave anyway?
My company has a weird manager layout, so I'll start with that. I have a supervisor that reports to our branch lead. We also have a people manager who acts as a lead for some of the other people, or just another resource to lean on, lets call him James. Separate of that I have a program lead. He is in charge of our program but doesn't take my timecard or approve anything. He tells us what work needs done, but that's about it, lets call him Lue.
Lue has about 20 something years of experience in a pretty niche field, so hes pretty irreplaceable. He's very grumpy and loves to keep that as part of his personality. It won't stop him from being professional when he needs to, but he doesn't try to say most things any nicer than he has to. I don't have a problem working with people like this. I can ignore the fake grumpy and see beyond it. A few months after I started Lue stopped being as helpful. He would take a long time to respond to me and would only offer the exact information he needed to.
Though he said nothing to me, he would go to James and complain about me behind my back. It was always the most nitpicky thing. Once James said he would handle it, Lue would go off about how I wasn't the person he wanted hired. James and I suspect this is the reason he's taking offense at everything I do. A few weeks ago he exploded about an email I sent and took extreme offense. The other leads told me the email wasn't something they would have been offended by, or even gave a second thought. The email could have been worded better, but it was fine.
I apologized to Lue anyway and offered to meet in person to clear the air. / was ignored. So I applied to another job within our same branch. I have a job interview next week
the crux of the matter is that last night I said hi to Lue for the first time since the email a month ago (he works remote and finally came in). yesterday he included me in his personal meetings with the other juniors for the first time in a long time and helped me with my work. I enjoy my program and would love to let bygones be bygones, but I’m not sure how willing he is. The question is, should I do the job interview and maybe take the internal job? I would only see him once a month at most. Everyone else on the program are my friends and support me either way.