rbarata - thank you, I think it's working!
So this is what the phal looked like right before repotting. It was in really tight moss and a pot that was too large for its roots. I would water every month or so, as that's how long it took the medium to dry! I'm actually surprised it stayed alive and seemed to do quite well even though the roots were not that great.
I just can't seem to replicate the amount of support with a bark-charcoal-perlite mix and a lesser amount of roots than before.
I'll send the picture of the leaning when I get back home after work.