Im not entirely sure you can spirit run to your body. The reason we are using the gliders in the first place is because you cant get in there unless you have the Wrathion's Legendary Cloak..
Breath of the Black Prince Legendary Quest Line Guide (WoW MoP 5.4) - Icy Veins
2.4. Epic Cloaks
After completing the Celestial challenge in the Celestial Blessings quest, you will be able to obtain one of the following 6 cloaks from Wrathion:
• Jadefire Drape (caster DPS);
• Cranewing Cloak (healer);
• Tigerfang Wrap (Agility DPS);
• Tigerclaw Cape (Strength DPS);
• Oxhoof Greatcloak (Agility tank);
• Oxhorn Bladebreaker (Strength tank).
2.5. Legendary CloaksAfter defeating all 4 August Celestials, on the Timeless Isle, your aforementioned epic cloak will be upgraded to a legendary version of itself.
• Jadefire Drape upgrades to Xing-Ho, Breath of Yu'lon;
• Cranewing Cloak upgrades to Jina-Kang, Kindness of Chi-Ji;
• Tigerfang Wrap upgrades to Fen-Yu, Fury of Xuen;
• Tigerclaw Cape upgrades to Gong-Lu, Strength of Xuen;
• Oxhoof Greatcloak upgrades to Qian-Le, Courage of Niuzao;
• Oxhorn Bladebreaker upgrades to Qian-Ying, Fortitude of Niuzao.