[Icehouse] Martian Coasters rule question

[Bart Janssens]

Season's Greetings everybody!  I have a rule question for Martian Coasters.

It is possible to achieve a Nest on your home square out-of-turn.  I can 
only think
of one way it can happen, but there may be more.  If you have all three 
pieces 'home', in the proper
order, but another player's piece(s) is/are between them, and they Dig 
them out, you have your Nest.
Do you win immediately? Or do you have to win on your turn?

Consider this setup:  Blue and Green coasters are adjoining, with arrows 
giving a three-space path
from Blue's center to Green's.  The Blue center has (bottom to top) the 
Blue pawn, Blue drone, Green
pawn, and Blue queen;  the Green center has the other two Green pieces.  
It's Green's turn; he/she
rolls a Dig and a 4 (or more).  Green can use those 4 movement points to 
dig out the Pawn and get it
home, and then use the Dig action to Nest all three pieces. However, 
Blue has gotten a Nest as well -
and that happened first, even though it's not Blue's turn.
Who wins? 

Bart Janssens
Double-Duty Lab Rabbit