Another expansion is being pushed "by a few," Walters said.
"This thing won't go to sleep. They keep waking it up and waking it up," Walters said.
The HBPA's board of directors unanimously voted last Friday against a proposal by track owners to expand the track to seven furlongs and widen the track's turns.
Some horsemen have said tight turns on the track are hurtful to horses, but HBPA officials have worried about how long the track would have to be shut down to widen the turns.
The newest track expansion proposal from track owners would require up to a year's worth of construction, Wayne Harrison, president of the local HBPA, told The Associated Press.
Walters said horsemen would like to have a seven-furlong track with wider turns, but not at the expense of being out of work for months on end.
"Some people will never recover. They'll be out of work for the rest of their life," Harrison said.
Although track officials could not be reached for comment Sunday, Walters said track owners are no longer pursuing the track expansion idea following last Friday's HBPA vote.
But track officials are open to new ways of approaching the issue, Walters said.
John V. Finamore, senior vice president of regional operations for Penn National Gaming Inc., which owns the Jefferson County facility, outlined the proposal late last week and discussed it with the HBPA's board of directors.
Finamore said Penn National Gaming was offering to spend up to $15 million to extend the track from six furlongs, or three-fourths of a mile, to seven furlongs, which is seven-eighths of a mile.
The redesign of the track that was completed last year allows for races up to 71/2 furlongs. The longer races were made possible by lengthening "chutes," which are areas where starting gates are set up.
But last year's track redesign did not include widening turns.
Last year's redesign of the track cost more than $8 million and included other improvements, such as installing a new lighting system and a new racing surface and banking the oval's turns.
The Associated Press contributed to this story.