Dino glitch

[ThatsSoAmber]

When I logged in my dino was full grown and i could fly it
I clicked on it and when on it. Then I crashed to the lobby
I tryed to go back on but it keep making me go to the lobby ;-;

I've tryed: 
Reistalling the modpack
Deleting the pack and reinstalling it
Having my friends try to kill the dino

Please if there is any other way let me know! 
I really wanna go back on to play with my friends
 

[JaariAtmc]

Tell the staff of whatever server you are playing on that they need to edit your playerdata (NBTexplorer) so you aren't riding a dino anymore.