I'm thinking it might've. If it was attempting to set up in the impassable blocks the wall sits on, it might be bounced it's positioning. A replay would help.
This weekend when I'm home at my desktop with coh2 I'll try and see if I can replicate what happened if you don't have the replay.
Yeah try to replicate it
And i still have no idea what you need more to see. Only very short time you can't see the mg in this clip.