The salary floor does not apply to new teams for their first 24 weeks.
Players are only paid in weeks when you have a competitive league game, with the exception of the fifth ranked team, which pays half the salaries in the first playoff week. This means that a team not in the playoffs might not pay salaries during the last two weeks of the season (again with the exception of the fifth ranked team), while some teams will skip one week of salaries. Because the week runs from Sunday to Saturday, all teams begin paying salary again during the offseason week ending with the season opener.
The bolded part should no longer apply as fifth place teams are now playing a relegation series as well as the teams in sixth and seventh, unless this is intended to be a bonus for finishing fifth instead of sixth, in which case it probably should be clarified.