Takahashi Daisuke held a conference and announced he split up with Morozov.
Edited to include translation by champs.
Takahashi Split with Morozov
Figure skater Daisuke Takahashi, also a grad student at Kansai University, attended a press conference held at Shin-Yokohama Skating Center on May 6th, announcing that he would leave Mr. Nicolai Morozov.
After the World Championships in March where he finished 4th Takahashi heard Morozov would be coaching Nobunari Oda, also a Kansai Univ student, starting from the next season. A week ago Takahashi decided and told Morozov(*1) that he would not be able to work together with Morozov any more. Asked why he made this decision, he explained that Oda is one of his chief rivals and thus he would not feel comfortable sharing the same coach. Since Morozov has also been his choreographer, he will be searching for a new choreographer as he continues to train at the university rink.
Note *1: The original article doesn't explicitly say to whom he told, so I assumed it was Morozov (rather than indirectly informing Morozov by telling another party such as JSF)