Word of Recall

[Porthos]

Which is why he prepares *two* castings of Protection from Daylight and also has the spell locked in to his staff. Is that not crazy enough prepared for you? There comes a point where even the most cautious character has to say, "If I prepare any more corner case or defensive spells I won't have anything left to attack with!", and in Malack's case this was where he drew the line.

This is the best explanation. Either that, or it was in his staff.

Consider, Malack wasn't planning on Vamping anyone when he made out his spell list. Thus, for him, his extra Protection From Daylight filled the same role as Word of Recall. Moreover, as you note, he figured he had plenty of backups in case someone went to town on him via Dispel Magic.

No, he used his sixth level spells for other things. Like say, dispelling his enemies' spells and Harming them.