Yes, there is one famous case of a sannyasi casting away his asceticism and become householder again on order of his Guru. The sannyasi was father of well known 13th-century Indian Marathi saint - Sant Dnyaneshwar Maharaj and his name was Vitthalapant. Sant Dnyaneshwar was a saint, poet, philosopher and yogi of the Nath Vaishnava tradition.
The brief story - Vitthalapant the father of Sant Dnyaneshwar married to Rukminibai but he had a strong desire to go to Kashi and become a Sanyasi. He was therefore, often asking the permission of his wife to let him be a sanyasi or ascetic. But as she was strongly attached to samsara she was refusing his wish. So one morning Vitthalapant went out by saying that he was going to the river for bathing and left home heading straight-away to Kashi leaving behind his wife and family. In Kashi he became a disciple of Shri Ramanandswami and observed celibacy and became a monk. Ramanandswami initiated him into sannyas, . He lied to his guru that he is single and dont have any wife or children. But in time Ramanandswami came to realize that Vitthalapant indded is a married person and he has given a false account of himself. Thus Ramanandswami ordered him to cast away his "Sanyasa" and begin his family life (Grihastha-shram) again.
After reaching Kashi Ramanandaswami called his disciple Chaitanyashram and placed all the facts before him, when he confessed everything and expressed his sorrow for having given a false account.Thereupon Swamiji reprimanded and ordered him to cast away his "Sanyasa" and begin his family life (Grihastha-shram) again. Vithalpant had no other go but to obey the orders of his Guru and he returned along with his wife and father-in-law to Alandi immediately after taking the orders of his Guru. - Hindupedia
Vitthalapant was initiated as a sannyasin by his spiritual teacher, Rama Sharma, who is also called Ramananda, Nrisimhashrama, Ramadvaya and Shripad in various sources. (He was not Ramananda, the founder of the Ramanandi Sampradaya.) When Ramashrama discovered that Vitthalapant had left his family behind to become a monk, he instructed Vitthalapant to go back to his wife and perform his duties as a householder. Wikipedia
So Vitthalapant the father of Sant Dnyaneshwar became householder again on order of his Guru , renouncing his sanyasa.