Too early to tell, Nick. I often have Neo or Bill seedlings that show that same trait at about that stage. I tend to hang onto them in the hopes that they will develop an upturned leaf tip as adults. Sometimes they do, but more often it just disappears as they mature. It has never been the whole grex anyway, so I'm not sure it tells much about the heritage.

I've pricked out quite a few trays of A. orlandiana tissue cultures and some of them start out with twisted/curved leaves too. They all seem to settle down as they get older.

That sure looks like the spines of an A. triangularis in the mix.