Ok! I just offered up a lvl 100 Arceus on the GTS looking for a Shaymin, and I got one- now I need to know if it is hacked, because... I am an honest trainer, and have never EVER used a hack, and don't believe I have any hacked Pokemon... anyways... without further adieu,
Pokemon Species: SHAYMIN
Nickname: Japanese characters for Shaymin
OT: Japanese characters
OT Gender: Blue
IDno: 12891
Shiny?: YES
EV's: not known
IV's: not known
Nature: Timid
Characteristic: Alert to sounds
Ability: Natural Cure
Moves: Seed Flare, Air Slash, Earth Power (tutor move), Healing Wish (platinum lvl up)
Level Caught at: unknown
Current Level: 100
Stats: 341 HP, 187 Att, 235 Def, 299 Sp Att, 236 Sp Def, 328 Spd
Location Caught: Sinnoh Fateful encounter
Egg?: no
Pokeball Caught In: Masterball
Any other notes?: When I first saw it, and that it was shiny, I was like oh ****, its hacked! But then I took it to the lady in Lacunosa Town to activate the Gracidea flower event and expected it not to activate... but then it DID, and I now have the flower! Does that mean it isn't hacked after all????? Please help!

Also, if I convert to Sky Form with the flower, can I change it back again???
Thank you!