Looking for a rulebook interpretation on a FT

[Scrapper1]

Ball is at the team's disposal when it is CAUGHT by the free thrower. So if the player leaves the lane space while the ball is being bounced, that's not a violation.

However, once the ball is caught, it is ALSO a violation for any player NOT in a marked lane space to be inside the 3-point arc or below the free throw line extended.

So, my guess is that the player backed out before the ball was caught but was still inside the 3-point arc after the ball was caught. Therefore, violation.