This shift must have been what Sage was talking about by the "low hanging fruit". They now need to be directly involved with the consulting end of the business, either through partnerships or by developing their own consulting capability. As a result there has been a basic change in how they obtain their contracts and some difficulty in building backlog.
There is a silver lining to declining backlog. The cost of this torrid sales growth is poor cash flow and a weak-appearing financial strength resulting in a lousy stock price (as has been extensively discussed). If growth slows from 40%+ to ~15%, cash earnings will rise to more closely match accounting earnings. Debt will be paid off and financial health will appear to improve. As financial strength improves, the stock should retain its current multiple, despite lower sales growth.
Then at some time a new acquisition program can commence, focusing on building their consulting capability. Hopefully THIS time they will time the secondary offering right (e.g. right after the momentum guys come on board) so they can keep growing.