“Gravity Axe – Grarl” prevents all manual changes of position. This includes Flip Summoning.
“Gravity Axe – Grarl” does not prevent changes of position due to an effect.
If the monster equipped with “Gravity Axe – Grarl” is not under the control of the player who controls “Gravity Axe – Grarl”, the opponent may manually change the position of his/her monsters.