People tend to roll over on where they get stuff FROM, not who they sell TO.
Law enforcement always tries to go UP the distribution chain, not down. At least, they won't work as hard to go down the chain.
Unless some customer was busted WITH these guys at THE TIME of the arrest, or unless there is some type of surveillance audio/video proof otherwise (which is doubtful) then everyone that those cops might have sold TO should be just fine.
IF there was any risk to people down-stream, it would be known within like a day or two. Meaning if they bust a supplier 1 day, if they DO have evidence regarding his customers and are going to go after any of them, they will do so VERY quickly after the arrest of the supplier.
If it's been a few days, there is probably nothing to worry about.
The assumption is that if a supplier is busted, that anyone who was a customer would probably know about it within a day or two, and probably "sanitize" their home anyway (by giving it to someone else to hold).
Relax. You should be fine.