Background: Cold is an American rock band, formed in 1986 in Jacksonville, Florida. With two gold-albums, Cold has sold over one million records in the US alone. On November 17, 2006, it was announced on MySpace that, after a period of uncertainty since that February, the group had decided to disband. In July 2008, it was announced that the original line-up would reunite for a tour in early 2009.
Context: Cold, who at the time were called Grundig, formed in 1986 with the line-up of Scooter Ward (vocals, guitar), Sam McCandless (drums), Jeremy Marshall (bass) and Matt Loughran (guitar) at Fletcher High School in Neptune Beach, Florida. The band played their first gig in 1990 at a club called the Spray. In 1992, the band released an 8-song EP called "Into Everything" Initially based in Jacksonville, they moved to Atlanta hoping to get a break in the industry. During this time, Matt Loughran left the band and was replaced by Sean Lay, who also left the group. Kelly Hayes then joined the band, and they all later returned to Florida. Three and a half years later in 1995, Grundig broke up and Ward moved back to Jacksonville, where he, McCandless, Kelly Hayes, and Pat Lally formed the band Diablo. Diablo would only last about 3 months. At the end of that three-month period, Grundig reformed under the name Cold in 1996.  Following Cold's progress in the Jacksonville scene was local Fred Durst. Impressed by what he had heard, he invited Ward to record two acoustic tracks, "Check Please" and "Ugly." The two demos were passed on to producer Ross Robinson, who was also impressed by what he had heard, leading the recently renamed Cold to record their debut album titled Cold, which was released in 1998. The record was a minor success under A&M Records - now an imprint label under Interscope Records.  That same year, the band released the Oddity EP. Its cover photo, taken by the wife of McCandless, depicts their pet tarantula named Wednesday, crawling on the face of her doll. The band sought a signature element that fans could remember them by, and Wednesday served as the inspiration; McCandless gave a particularly favorable image of a spider to a friend and tattoo artist who transformed it into what would become Cold's official logo. The drummer would later note, "Our music kind of creeps along like a spider."
Question: Who replaced Sean Lay?. Whats the answer?
Kelly Hayes then joined the band, and they all later returned to Florida.