Was this cheating

AntoniusXC

So i lost a game pretty straight away as the game started but something confused me how did they retreat Eevee with no cost was this an exploit or cheating or am i missing something? I include the battlog below.

Setup
Bisafloar5447 chose tails for the opening coin flip.
AntoniusXC won the coin toss.
AntoniusXC decided to go second.
Bisafloar5447 drew 7 cards for the opening hand.

• 7 drawn cards.
  AntoniusXC drew 7 cards for the opening hand.
• 7 drawn cards.
  • Basic Darkness Energy, Brock's Scouting, Eri, Rare Candy, Basic Darkness Energy, Prism Energy, Deino
  Bisafloar5447 played Eevee to the Active Spot.
  Bisafloar5447 played Electrike to the Bench.
  Bisafloar5447 played Latias ex to the Bench.
  AntoniusXC played Deino to the Active Spot.

Turn # 1 - Bisafloar5447's Turn
Bisafloar5447 drew a card.
Bisafloar5447 played Earthen Vessel.

• Bisafloar5447 discarded Basic Lightning Energy.
• Bisafloar5447 drew 2 cards.
  • Basic Lightning Energy, Basic Water Energy
• Bisafloar5447 shuffled their deck.
  Bisafloar5447 attached Basic Lightning Energy to Electrike on the Bench.
  Bisafloar5447 ended their turn.

Turn # 2 - AntoniusXC's Turn
AntoniusXC drew Zweilous.
AntoniusXC played Brock's Scouting.

• AntoniusXC drew Hydreigon ex.
• AntoniusXC shuffled their deck.
  AntoniusXC attached Basic Darkness Energy to Deino in the Active Spot.
  AntoniusXC ended their turn.

Turn # 3 - Bisafloar5447's Turn
Bisafloar5447 drew a card.
Bisafloar5447 played Nest Ball.

• Bisafloar5447 drew Mew ex and played it to the Bench.
• Bisafloar5447 shuffled their deck.
  Bisafloar5447 attached Basic Lightning Energy to Electrike on the Bench.
  Bisafloar5447 evolved Electrike to Mega Manectric ex on the Bench.
  Bisafloar5447 played Super Rod.
• Bisafloar5447 shuffled Basic Lightning Energy into their deck.
  Bisafloar5447's Mew ex used Restart.
• Bisafloar5447 drew 2 cards.
  Bisafloar5447 played Tynamo to the Bench.
  Bisafloar5447 retreated Eevee to the Bench.
  Bisafloar5447's Mega Manectric ex is now in the Active Spot.
  Bisafloar5447's Mega Manectric ex used Flash Ray on AntoniusXC’s Deino for 120 damage.
  AntoniusXC's Deino was Knocked Out!
  Basic Darkness Energy was discarded from AntoniusXC's Deino.
  Bisafloar5447 took a Prize card.
  A card was added to Bisafloar5447's hand.
  Knocked Out with no Benched Pokémon. Bisafloar5447 wins.

AntoniusXC

wait neve rmind i just totally missed Latias ex was on the bench