Seeing how they were rumored to be raising money at a lower valuation than this 3 months ago[1], it's hard to see how this could be a distressed sale.
[1] http://www.business-standard.com/article/finance/redbus-in-b...
[1] http://www.business-standard.com/article/finance/redbus-in-b...
Redbus was a splendid initiative and I have experienced bus ticketing on it myself. Must congratulate the team that brought it so far... it's not an easy journey given the thick and thin of internet in India.