I see, it's more likely he meant the room directly north of his, not north-east across the hall.
In that case Wiglaff is content to open the door if that is the decision of the party.
If it is desired to capture the whatever-it-is, Wiglaff will remove his armour so he can cast colour spray.
[f=32]Wiglaff the Elf, F3/MU2
(M 12", AC 9, HD 4+1, hp 14/14, N) cloak of elvenkind
, battle-axe; light, colour spray
[f=47]Wilibald "Willie" Whitfoot, F1/T1
(M 12", AC 6, HD 1+2, hp 9/9, L) gambeson+helm, shield+warhammer[/f]