It’s not strange. All those things could happen - Cantwell is the starting LT in the spring and now he “appears” to may be not be a starter at tackle and he could be an all ACC performer by mid year or year end.
My guess on what’s happening - he was thrust into LT in the spring to test him and because we had no suitable person at that spot so it was really the only option. From what I gathered In the spring, Cantwell did okay all things considered but struggled with speed rushes.
Now, Samson is healthy and he is better at LT. so, next suitable position is LG for Cantwell given that Congdon played RG the entire spring and handled it decently. Cantwell is adjusting a bit to guard, I’m sure, but I fully expect him to at worst be rotational with buchanon and at best, be the starting LG.
Personally, I like the Samson/cantwell/RR/congdon/mccoy line. Two rookies surrounded by vets on each side. Next year, I expect Cantwell to slide back out to LT (or RT).