Who said he was a star? They just mentioned he was good enough to get some reps in. Aromashodu was cut because Saban preferred Vick, a slasher for QB/WR. I know Devin. When the dolphins released him, it wasn't because he sucked, they just had enough depth on the rosters. He was improving his routes,catching.
He played ST for the Colts and managed to make some plays before getting reps at Wr with all of the injuries.
Practice Squad players are just long shots, no one really knows what they can do and they can either play well or play badly...yaneverknow...