Thanks for the very informative posts Huck and Tie Domi. So if the number 2 engine failed after V1 it might cause the nose to rise prematurely and a tailstrike, with the unfortunate crew committed to continue.
With the end of the runway looming fast, it is possible that the pilot flying might pull further, rather than push and trim forward, thus making things worse, particularly if he were not particularly current. The aircraft justs makes it into the air and then sinks back hard with the ensuing high energy crash.
This is all just rumour and speculation, which is after all what Pprune is about. But it is a possible scenario.