It's a hard one. Previous temp managers have had a quick effect that resulted in silverware (FA Cup isn't out of reach), but they've faltered down the line. However, I don't trust this board to make an astute appointment, so 1 day or 1 decade wouldn't make much difference, tbh.
I was thinking the exact same thing. I'm not sure the position he ended up playing (LWF and Gallagher went central?). In any case, I questioned the change right away, and it ended up having a huge influence on us dropping two more points.