It is a big blow for Moody, who was hoping to re-establish himself in the England side after missing the autumn internationals following an ankle operation.
The visitors dominated the opening stages, with England centre Riki Flutey, playing at fly-half after missing the autumn Tests with a calf injury, Powell and flanker Richard Birkett, back for his first match since October, all prominent.
But the number of primary school pupils in England missing school without permission in the autumn term of 2009 and spring term of 2010 has risen slightly.
But his joy was short-lived and he admits he has had a tough time on the sidelines, missing Wales' summer tour to South Africa and the recent autumn series.