My dear husband (my own radically political Irish man) is an academic historian. I was re-watching the trailer for next week’s episode and he threw out his own suggestion about what is happening next week. He told me that it didn’t make a lot of sense for someone who is in deep trouble in Ireland to run to England. He suggested that it is Sybil who got into some sort of trouble and not the other way around, and that it is Tom who ran to England to try to get Lord Grantham to come to her rescue, thereby appearing to have abandoned her. This could explain why he is crying when he sees her again and not the other way around, and why Sybil called to let everyone know that she is alright.
(blogger note: It’s a very interesting theory, and based on just the preview it could certainly make sense. However, the spoiler synopsis of the next episode that was released around Wednesday definitely says that Tom is in trouble with the Irish police. It would certainly be interesting thought if it were the other way round!)