I believe it will find its way back to Kansas next turn. But, to keep it out of any of the three city hexes again, you should make sure they are all occupied by three other units before ending your turn.
Oh really? Well the YELLOW brick road never did go through the 3 city hexes of Moscow. The YELLOW brick road went south never touching Moscow. I just got tired of clicking relocate otherwise I would see if the relocate of the HQ would leave the Stalingrad area(I clicked relocate for about 15 minutes) I know in other games the HQ did a semi OK job and I settled for an area, most of the time, 10ish hexes SE of Moscow. I just wanted to see if it would head back north, oh well. But still the randomness of the relocation is always, and I mean ALWAYS S or SE movement and only N if it has no other choice.
“If you teach a man anything, he will never learn.”;