Help fixing sabotage or stupidity: GE Profile Bottom drawer fridge

[rcdr]

Is there an easy way to unblock a warm air return on a GE Profile bottom drawer fridge?  Can the back external panel be removed to access the warm air return channel ?   Someone has sprayed hardening foam into it from the top left vent that is found in the fridge, blocking all warm air returning from fridge into the freezer.

After spending hours debugging a warm fridge (beer section)/cold freezer, I’ve discovered the problem – a purposely blocked returned air channel.   Both left and right vents in the fridge are blocked.  I can see foam in the left vent.  I've tested by blowing air into the vents (with a leaf blower).  I don’t get any air out of the exit vent that is behind the evaporator in the freezer. 

I have no idea why anyone would do this.  It’s either sabotage or stupidity!

The model is:  PDS22MBSAWW.

The GE technical service manual (Page 25) shows various tubes on the back.  I’ve undone the few back screws on the back exterior panel but nothing seems to budge.

Help.  Thanks.

[BrewHobbyTech]

Sometimes a drill or grinder or saw-zaw comes in handy for certain jobs. It ain't pretty but sometimes you have to think outside the box and do what must be done to solve a particular problem. 

[BrewHobbyTech]

Of course you should always get the customer's permission to do the work first and explain why it must be done and it's possible that the fridge could be ruined by doing this but.......the fridge ain't working now, and you're just trying to save it. If you can't fix it it's junk anyway........