In the wake of the collapse of its latest merger talks with T-Mobile USA, Sprint is undergoing one of its periodic reorganizations. CEO Marcelo Claure has realigned the senior management structure, reducing the number of his direct reports and letting some key executives, including the operator’s first ever COO, Günther Ottendorfer. The appointment of Ottendorfer to the COO role in 2015 was seen as a sign that the operator was trying to tighten up its processes and become more operationally efficient but now Claure seems to be eyeing more streamlined, direct control. Also departing are SVP of marketing, Jeff Nelson, and Jim Hyde, the president of MVNO and wholesale business. Nelson reported to Roger Solé, who will continue in his…