Actually, it does explicitly state so in the rulebook (which you quoted):
"If you have more than one action available, you must resolve one action before initiating the next action. Resolving an action includes completing any free actions the action allows."

Using my previous example again that is why you cannot use Outwit to interrupt Charge, RS, or HSS. Both the move and attack components of those abilities must be completed before you can do anything else, including any extraneous free actions.

Agreed. Most free actions do occur during another action but only because they are part resolving the action being taken. From my other previous example using Nanobots is not part any other action which is why you must do it before or after completing a move action. Combining both examples, you could not start a Running Shot by moving, Nanobot an object, then make your attack because you would be performing a new action before completing the one you started.

Flurry is a little trickier though because of the 'resolve the first attack before performing the next' and after further reading I can see how WK may rule that Ricochet does interrupt Flurry. It would set a precedent for interrupting actions though.

Well, the Ricochet free action is assigned to BB during the Flurry action, but it doesn't actually get resolved until Flurry is resolved. So... uh... you're both right.

(This may be the first time I have ever typed these next words..)

Let's not worry about why it works! Just celebrate in joy that it does work!

All hail Bouncing Pimp



And my new animated avatar to prove it....


Tarnish

Seems a little wonky to me, but if it works, it works.

Not that I expect it to work often, but I'm sure there will be moments. I can almost hear the wailing now if this maneuver wins someone a Starro.

Actually, thanks for mentioning Nanobots, which I had totally forgotten earlier. It made me go back through the FAQs, and I found this tidbit:

So here we finally have an undeniable statement that Free Actions cannot normally be given during another action.

However, the Ricochet power says that "once the attack resolves", not "once the Action resolves", thus implying, but not specifically stating, that it could 'interupt' the Flurry action.

So my logic was flawed, but, apparently, my conclusion wasn't......