Amber Alert - total loss of control?

The other night there was a amber alert in Seattle, WA area. When this happened I lost total control of my Roamio, no buttons would work at all? I was watching a recorded program and it appeared the TiVo went to some special channel and locked itself there. I found it interesting that the TiVo would relinquish all control in that way. Makes me wonder from a security standpoint could a similar command be created maliciously? This is essentially a backdoor into TiVo OS to give over control?