...which actually opens up another possibility: get a search warrant. We have the words of several Jedi that there is a Sith connection here. It's probably enough to acquire a warrant.
Beats sneaking in, at least. My other suggestions remain viable, depending on what we decide to do.
...
Ush, I'd like to inquire into obtaining a search warrant for Lennah's business and belongings, on the grounds that we believe he has been colluding with Sith in his dealings. I have a Contact who is a Coruscant PI that I haven't tapped yet if it speeds up the process.
I'm also relatively sure we could get the Council's backing first if needed, yeah?
If others don't like this, we don't have to follow through on it. Just trying to do the preliminary inquiries if we decide to pursue it.