I've been
very aware of this one since a weasel pulled it on me mid game about 2 years back..
(for those new to the subject here is a flashback)
(irrelevant bit)
People often cite p2 BRB "pick up the dice you wish to re-roll" but the second bitsame page "If you re-roll a 2D6 or 3D6 roll, you
must re-roll all of the dice" and the blast reroll of "the player must re-roll both the scatter dice and the 2D6."
are often not cited..
(also 6th ed leak clarifying how rerolls work..Its one of those bits where the studio blatantly went "WTF people game as played played nothing like we do!!!! OMG"
but-- this has nothing to do with the price of fish as 6 rolls to hit do not a 6d6 make, instead you follow the raw of the psychic powers overriding everything else (L. Malek styly)
"may reroll all" (doesn't distinguish between successful or not unlike all the other similar things I can think of(e.g. platoon command against cover saves super power specifies a criteria of "successful") You opt at a point whether you wish to roll your hand again.. there is no hold buttons available on this one arm bandit.
Pretty much every non chaos player I've met has been a hardcore believer in this interpretation.
Tis why I fell into the trap of always dual lashing and not falling back onto the warptrain when it left the station for a second time.