What if my opponent gets the control of my Lei Lei after it attacks, can my opponent change the battle position of Lei Lei?

Well that's what I found in netrep





If you attack with "Goblin Attack Force" and it
is shifted to Defense Position with its effect, if your opponent takes
control of it during their following turn they cannot manually change
it to Attack Position.






When you
attack with "Goblin Attack Force", its Battle Position cannot be
changed until the end of your next turn:Turn 1: You attack with "Goblin
Attack Force". It is shifted to Defense Position.Turn 2: If your
opponent takes control of "Goblin Attack Force", they cannot manually
change it to Attack Position.Turn 3: You cannot manually change "Goblin
Attack Force" to Attack Position.Turn 4: If your opponent takes control
of "Goblin Attack Force", they can manually change it to Attack
Position.Turn 5: If you still control "Goblin Attack Force", you can
manually change "Goblin Attack Force" to Attack Position.