He held his arms out to arrest the forward momentum if needed. She really needed to get some better motor control, otherwise Julian would be fixing her up as Ezri as much as he did when she was Jadzia but for different reasons.

"The last time I saw you was before I left for Bajor, to deal with Dukat." That might say alot, as the only reason the crew would know he survived was because he came to Kasidy.