I hope those are the words of a journalist and not what the Investigation Board actually said. Still, lots of questions.
Both engines stalled during right turn after touch and go. According to Estonian Safety Investigation Bureau after touch and go airplane did not react to pitch control. Therefore airplane lost altitude during t/o roll and imapcted to the end of runway. Engines suffered heavy damage but pilots got airspeed and altitude back until right turn, when both engines shutdown inflight. Instructor and cadet injured during landing