"She and her boyfriend and/or pimp and their friends"
Probably had enough dirt on someone with resources....and for a drug taking, alchohol drinking stripper, this is a young woman quite capable of "thinking on her feet" when she's standing.
sp
Could be. As I say, the info isn't hard to get. A pimp would be the kind of person who would readily know how to get the information or who to go to, whether he had any dirt on the person or not. It's also not particularly expensive.
I think too much is being made of the question of Mangum's ability to get the information. It's not at all difficult, even for an unsophisticated person like Mangum who no doubt has a lot of street smarts, as you say.