Whats with the instant recovery on Multiplayer???

So I've been trying the multiplayer today and I've noticed more than once, that when karts are getting hit by items, they aren't getting spun out and after only a very slight stutter, they are straight back up to full speed and away!

I know its not due to items being stored at rear and cancelling out whats hitting them, so can only assume that 1. There are dirty cheats out there or 2. There is some sort of bug. Anyone experienced this and/or have any sort of ideas on explanations??