Board Thread:Speculation House/@comment-14138255-20140815002519/@comment-24891101-20140816163819

Which means that they had someone on the ground following Roman closely. Glynda's rapid response was almost certainly preceded by her contacting the cops, meaning they'd be on their way to the scene. So, a few short minutes to get the cleanup team in position and perform the job, which probably happened right in front of the shop, since the next logical place for Glynda to go after driving off Cinder and Roman is to the store, to secure the scene, at which point there'd be no opportunity to vanish them. It all depends on how the police and Hunters interact, legally; if Glynda could not legally secure the scene, that changes things, and lengthens the window, but not by much.

The alternative is agents within the police force, taking custody of the goons, but that has its own problems, since any disappearence of suspects under someone's watch would raise red flags, causing the agent to fall under scrutiny.