I think you're right. I believe I've read that. Single ply yarns are susceptible to wonky knit stitches, too. I don't know if there exists a preventative technique for this annoying little hitch.
Nothing I've tried with this yellow yarn has prevented that wonky leg from gumming up the field of K4's. I just keep plodding along, sometimes stopping to "right" a few legs with my dpn.
I'm mollifed in the knowledge that aggressive blocking will remedy the crazy knit stitches.