Lies! Tricks! He would never hurt his Rainbow. And Rainbow would never hurt Rainbow. So that meant one of these ponies hurt Rainbow! Hurt her bad! He wouldn't let any of them lay a hoof on her. Any of them could've done it. Couldn't trust any of them. He snarled loudly and snapped in the red pony's direction. Show her not to get close. He'd get her. He'd get her good. Get her back for Rainbow. He'd-
The sandy-maned unicorn perked up instantly. Rainbow getting up? Rainbow was fixed! He turned and licked her cheek excitedly. Fixed, all better, now she could-the intruder! He turned and snarled her way. Show her he wasn't afraid. He'd take her down. Rip out her legs and eat the-help Rainbow up! Put the weapons down, help her up, get her safe. Dropping his stakes and knives to the floor, he wriggled underneath her barrel nose-first and gently helped prop her up. Slowly, slowly, lift the heavy mare, get her-intruder! He snapped at the vampony. Stay back-slipping! Adjust the feet, more strength, get her up...
Whether or not she'd meant it, Rainbow provided an ample diversion for Miss M.
[tldr: Sandy wriggles under Rainbow's barrel and forelegs to try and lift her up. While he's doing that, he's occasionally snarling at Miss M. With Rainbow taking up most of his attention, he's rather distracted.
Hopefully, the style isn't too confusing. ]