Seems like speculation, something for which there is no shortage in this case. Who is the alleged woman? If she is identified and called to testify, would that help or possibly hurt DW. After all, if Damon was out of the house, it would have provided a better opportunity for the kidnapper (assuming Danielle was in the house when she was abducted)to enter undetected. At the least, it would cast even more suspicion on the prosecution's case because it would be another lie exposed.
That is why I said reportedly. And in my scenario, it doesn't matter if he did, or just went into his bedroom and turned on the TV. Either way Danielle could have easily run away.
You are correct, if he did leave the house, it would leave the children by themselves.
It still doesn't answer why, if it was DW that snuck into the house, how he did so without leaving a single TRACE of EVIDENCE.
You are correct here too. It would be to defense's benefit to have a witness to this.
Again, for my hypothesis, it makes no difference whether Damon left the house or not.