If you talking about what I think your talking about, that was the guy that Amanda's sister was plotting with to get back at her, for something that happened in her childhood. He was faking his 'death', let Amanda think she had killed him, and walked back into her house a few days later. The same guy that kidnapped Belle that time, remember?
No, she was talking about the one that Corey had hired to break into Irene's place, and that Amanda then framed for a break-in at her own flat, which she did to manipulate Dan into letting her move into his and Leah's house. When the guy confronted her she tried to drive away and knocked him over somehow. And you're right, I don't think that came up again, even after what happened to Ethan.
Wasn't it Scott she was manipulating that time?
I don't remember what happened to Ethan.