Re: both jacklers.
D&E ?... Permission to keep handling the ball 'once qualified/permitted to do so ' ( by virtue of hands on prior to forming) only seemingly ends when the ruck ends. Or can you find any reference/clarification that says it ends earlier?
And it's a fair point that requires an answer. The law currently says:
[LAWS](b) Players must not handle the ball in a ruck except after a tackle if they are on their feet and have their hands on the ball before the ruck is formed.
Sanction: Penalty kick[/LAWS]
Clearly, there is nothing specific in those few words that suggests that the exception is time-limited. If we were forensically dissecting parliamentary language, we might focus on the use of "have their hands" as opposed to "had their hands", and ask whether this is the use of the present historic tense or the present tense, and whether it makes any difference. But this is the iRB, and given its history of imprecision in lawmaking, such sophistry is inappropriate.
We need to look at the genesis of the exception, not merely the current wording of it. That genesis came as a revision in the 2010 law book, and while this has not (to my recollection) been the subject of any clarification or recent discussion over ambiguity, my recollection is that this was probably the last in a package of measures designed to rebalance the breakdown away from the side in possession, and towards the "defending" team. Sir Ritchie's magnificent exploits were (as usual) to the fore, as he would get his mitts on the ball, the ref would bottle the "holding on" call, and the ruck would then form - with Sir Ritchie then being penalised for his magnificence (handling in the ruck).
All the discussion in (UK) meetings etc around this point at the time stressed that once the jackler lost contact with the ball, his privileges expired. I can find no contemporaneous commentary to that effect, but am confident it reflects what everyone at the time took to be the position.
Happy to be contradicted. If anyone feels the need to focus tightly on the wording of the law, then I contend that the use of the present tense there rather than the past implies continuity - but this wouldn't be where I would personally focus my attention in an effort to get at the truth.