The owner may not be a POS, he may be another person who knows NOTHING about electronics and yet, thinks he can "figure out how to do this". (What ever "it" was.....)

YOu've got to get the wiring diagrams out and, using wire color and the pin each lead connects to, you can figure out what he did. If ou can't, I might be able to if you can give me details of what is going on in the trunk lid.
If the top won't work, it can be this or it can be unrelated. But I will tell you this, it looks like an attempt to MAYBE alter how the wing deploys.

If so, it could be that he disconnected the limit switches, or one of them, from the BCM. In that case, the BCM may be telling the top: "Do not move, I think the wing is messed up". It could also be wiring to the trunk latch switch for something, which is also bad, the CLP/SSM must know when the trunk is closed in order to let the top controller move the top.

I just can't tell from the photos exactly what connector and pin(s) are involved in the trunk lid.

I live up by Colleyville if you want to stop by sometime.