Forum:Horus Lv 6 vs. Kelbek

So I was playing My sister and she had kelbek on the field http://www.yugioh-cards.net/Merchant2/graphics/00000001/dr1/huge/DR1-EN240.jpg

and so I summoned Horus Lv 6 http://yugioh-deck.com/card_images/horus_the_black_flame_dragon_lv6.jpg and went bam attack it!

Horus destroyed Kelbek but was bounced to my hand. He completed the Summoning conditions though so could I still send him from my hand to the graveyard to summon Horus lv 8?