Please don't create workaround like this.  `qdel` is new, and we'd like to get these special cases fixed properly.  This should be solved in one of two ways:
1. If the cable object has a reference to the pAI, have it null out `pAI.cable` inside `Destroy`.
2. If it does not have a reference, then null `cable` after the call to `qdel`.