ruling...again?

During main phase 1,when the turn player decide to go into other phase,the priority will pass to opponent.IF opponent got active any card effect,the priority will pass back to the turn player and still remain at main phase 1 and the turn player still can play speed spell 1 cards and end main phase 1 go to other phase.

example :

turn player:
hand : fissure
field got 1 monster with 1500 attack

opponent:
lp : 1500
field only got 1 set card at spell/trap zone.

turn player declare battle,priority now pass to opponent.
opponent active embodiment of apophis.

now priority pass back to turn player,turn player play fissure and go in battle phase again and win the game.

saw this from other forum,welcome to comment if there are any mistake/any thing u want to ask