That's quite likely! And to have the forethought to modify before the thing was completely destroyed too. Perhaps it was some part of the engaging mechanism that was wrecked. Give credit where due, the mod is a proper job. If I hadn't happened upon the details in the IPC I would simply have wondered why the dog was there and moved on. Most Tenant mods give themselves away with 'Dad and Dave' techniques.
What I'm really after is info on how it was and whether the thing can be un-modified relatively easily or whether a doner is needed.