Cell phone video published by an unknown Ukrainian artilleryman shows the use of an MT-LB Mounted "Rapira" Anti-Tank Gun. They displace at around three minutes into the video after accurate counter-battery lands nearby to their position.

This one's an interesting one. I'll let some of the artillery nerds explain the process down in the comments. From a rough perspective, it appears as if at around 2 minutes into the video they have a round fail to fire, and at 3 minutes semi-accurate return fire from an opposition artillery line starts to impact close enough to them that they make the decision to bug out.