He's finally back, and ready for action!
The MD2 values are in the zip file via the attachment, it's just the normal "PLAY PLAY.MD2 3.0 0.0" value.
Put the MD2.DAT in your SRB2 folder, and the "PLAY.PNG" and "PLAY.MD2" files go into the MD2 folder which you should make inside your SRB2 folder.
I hope you guys enjoy this, it took me some time to revive and keep the animations true to SA2/SA2B.
EDIT: Now it's time for the newest version! It's animations are now fixed to look better! Download it in the attachment!
UPDATE AS OF 21/12/2013
Some animations have major changes, others have minor changes.
No more waddling for the walk animation!
New animations added as second "style" just in case someone prefers the old one. Sa2SonicDiffAnims.rar is the new one in this update.