Odd move, but it suggests to me that PDC is happy with Devera at right back in the long term. Risky strategy really as Crawley and Hartlepool were average opposition, and he could come undone against better teams.
Don't forget vs Brighton...who in all fairness can be classed as "a better team" TBH.
But I agree that RB would be one of the positions that may need strengthening more than CB.