Ok I might relent with the no-ball rule - see below. I did not...

Ok I might relent with the no-ball rule - see below. I did not notice him slide.. Did C9 give a better replay? They seemed to just ignore it.

5. Fair delivery - the feet
For a delivery to be fair in respect of the feet, in the delivery stride
(i) the bowler's back foot must land within and not touching the return crease.
(ii) the bowler's front foot must land with some part of the foot, whether grounded or raised, behind the popping crease.
If the umpire at the bowler's end is not satisfied that both these conditions have been met, he shall call and signal No ball.