The former stars of The Hills, who finished second to Rylan Clark in the recently-concluded series, said that they are planning to have "a nice vacation" in their native America as they consider a permanent move to England.
Asked what prompted them to leave a country they claimed to love, Heidi revealed: "I have an emergency hair situation going on.
"Usually I get my hair done every three weeks and I'm at about seven weeks or so.
"I've had the same person for seven years - he's a British hair guru who perfects blonde so I have to go back and see him."
Speidi added that they also need to release their dog sitter from his duties and "decompress from living in that wonderful [Big Brother] house".
The couple, who are taking a blown-up, laminated copy of their OK magazine cover in their luggage, also accepted that the media storm surrounding them won't last forever.
Speidi with their ex-CBB housemates Gillian Taylforth, Frankie Dettori, Neil Ruddock and Sam Robertson
"I think [Rylan] has more longevity [than us] because this is an emotional response to a wild, crazy thing," Spencer told the publication.
"He can maintain being the likeable nice guy, build a true fanbase [of] people that want to watch him for normal stuff, not crazy wild antics, silly batty stuff. I would have loved to have started Rylan's tactic nine years ago."
Speaking to Digital Spy last week, Speidi's fellow contestant Claire Richards branded the couple "ridiculous' for claiming that they feared for their lives in the house.
Watch more of Digital Spy's chat to Claire Richards below: