Has Lalu Yadav Really Turned around the Indian Railways?

The amazing turnaround of the Indian Railways from a loss making entity to a profitable venture has caught the eyes of the the premier business schools, Harvard, Warton and IIM-A, in the world. Writing for the American Magazine, Graeme Woods writes,

Lalu’s term as railways minister has been shockingly successful. Instead of turning India’s most prized national institution into a basketcase and a ruin, Lalu has led one of most spectacular economic turnarounds in a country bursting with economic miracles. Indian Railways began raking in cash and posting surpluses in the billions. And the intelligentsia and technocracy, at first shocked and dismayed that a shameless populist had seized a fragile and unwieldy national institution, have largely come around to acknowledging that India Railways has been transformed into a respected institution—and so, possibly, has Lalu.

But has this turnaround been real and are there costs associated with the turnaround that we dont know about. For example, on the day that Lalu Yadav presented his last Railway budget before a new government takes office, one of the trains derailed killing about 16 people and injuring scores of others.
1. So in the name of profitability has safety of the railways been compromised?
2. What happens when the new government comes to power with somebody other then Lalu as the rail minister?
3. Will there be a smooth transition of power and will the turnaround continue?
4. What about the sordid state of affairs in the maintenance of railway equipment as highlighted by the picture below?
5. Is this the image of the developing India that the railways wants to project to the world?