One spoilery complaint about "Listen"

[dbskyler]

Okay, it's a silly thing to be obsessing about, but I can't get over how the TARDIS was able to land on Gallifrey without all the alarms going off and guards showing up that we used to get.

For example, this scene from Deadly Assassin (start at 1:10).

Also, can the Doctor just go land in Gallifrey's past whenever he wants now? I thought it was still Timelocked / in another universe or something?