Wrong foot placement in Janu Sirsasana B (Head-To-Knee Pose B)

Was practicing Ashtanga this morning (not a Led class) and I was towards the back end of the studio. In Janu Sirsasana B (Head-To-Knee Pose B), as I was folding-forward, I happened to catch a glimpse of those in front of me: they had their foot placement wrong. The foot that is on the bent leg should be flexed, parallel along the thighs, not pointed to the side. I am pretty sure those that caught my eye have been practicing longer than I am, and yet they are doing the pose not quite correctly.

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