How could Yaakov Avinu go out at night?

A few days ago, in daf yomi (Chullin 91a), we saw that one a Torah scholar should not go out alone at night, and that this is derived from the case of Yaakov, who went out alone after his small vessels at night.

(בראשית לב, כה) ויאבק איש עמו עד עלות השחר אמר רבי יצחק מכאן לת"ח שלא יצא יחידי בלילה

As Rashi explains, they wrestled until dawn, showing that mazikin cannot harm during the day, such that he would not need shemira during the day.

מדקאמר עד עלות השחר - שמע מינה לא ניתנה רשות למזיק להזיק ביום לפיכך לא הוצרך שמירה:
מכאן לתלמיד חכם כו' - שהרי יעקב נשאר יחידי והוזק:

Someone in the shiur asked how Yaakov could go out alone at night. After all, the avot kept the entire Torah. (And, I would add, the gemara just above sort-of endorsed this idea, stating that Yosef in disguyise commanded that his brothers be able to see the bet hashechita as well as that the gid hanasheh was removed.) How could Yaakov go out alone at night, when the gemara says that a Talmid Chacham should not go out at night?

My answer is this: Where is this halacha derived from, if not this very incident! What if Yaakov tried to keep this halachah, and did not go out at night? Then, the incident would not have happened and the gemara could not have derived the halachah. In which case, Yaakov would not have known not to go alone out at night.

More than that, not going out alone at night would have created a temporal paradox which could have destroyed the entire universe! Therefore, Yaakov had no choice but to go out alone at night and subject himself to danger.