Does rugby need to take a closer look at its breakdown laws?

FIJI SEVENS HEAD coach Ben Ryan published a number of intriguing tweets yesterday evening highlighting a technique which he believes has the game “in crisis”.
The former England Sevens boss has an issue with the rucking technique that, depending on where one is from, is referred to as a crocodile roll, tin opener, can opener, body roll, croc roll, alligator roll, gator roll, saddle roll or log roll.
Before we go any further, let’s take a look at an example of the technique in question.

We see Cian Healy employing the roll in the GIF above, wrapping his arms tightly around the midriff of France’s Nicolas Mas and then using his own body weight to roll Mas to the side and away from the ball.
It’s something we see regularly in the modern game, and in most cases the technique is carried out with no harm to the jackaling player [the defender over the ball looking to get his hands on and steal]…………. see more at :- http://www.thescore.ie/rugby-ruck-croc-roll-breakdown-1813579-Dec2014/