Is it frowned upon to quote yourself because you feel like the OP completely ignored your post and suggestion? Eh, I'll do it anyway because I don't really care about social norms...
I will add to this though. I do not change my temperature when I wrap, so I don't necessarily subscribe to that theory. They do cook faster than non-enhanced ribs, so a shorter foil time *may* work.
What I will come back to again is that I "foil" in pans and not in a tight wrap. Not saying that's the end-all, be-all to your issue, but I do believe it is a factor you're not considering. You, and one other person I know personally who has had this issue, wrap in foil boats.
I'm sure there are teams who wrap in foil and don't have this issue, and I am just one measly person whose opinion fell to the wayside, but I am telling you we've done well this season and we use pans.
I didn't ignore you man......I have foiled in pans both deep and shallow along the way with honestly ok results for a while in cookie sheet foil pans. That's actually how I finished last season and started this one but then it all went to hell again so I tried to eliminate variables and went back to foil wrap.
I have had some of my best results in pans so I thank you for that thought and i won't hesitate to try it again.