Ghost image of Monitor 1 in Monitor 2 with wound together VGA cables

In a custom-made special purpose cabinet, I have two LCD monitors coected to a single PC with VGA cables. Each VGA coector in the PC outputs different "feed". The cabinet houses multiple peripherals, so all the cables have been wound and tie-wrapped together through most of their lengths to keep the interior tidy.

I realized recently that a ghost/outline of Monitor 1 appears in Monitor 2 (like a kind of watermark). Discoecting the VGA cable of Monitor 1 erases the ghost image in Monitor 2, but the ghosting still happens if I only kill the power to the monitor. If I replace the VGA cable of Monitor 1 with another cable that isn't twisted together with the others, the ghosting disappears.

The VGA cables seem quite cheap, so I theorized that the VGA cables interfere with one another because they're wound together. I'm far from an interference expert, though...

My two questions :

1. Is my theory correct? Can cheap VGA cables create ghosting images of one another in monitors if they're twisted together?
2. If possible, can you point me to a resource explaining (or could you explain) the basic working of VGA interference, as I couldn't find anything useful/readable.