Table Join Between Excel Sheet And MS-SQL

My company has recently transitioned to a centralized Oracle database model.
For the sake of security, the "powers that be" have also denied any query ability to any central tables. They refuse to create views or any other open tables for people to query.
Instead, they provide a "tool" which people can use to download data - to Excel Spreadsheets.
In the past, before this "improvement" lots of users in the local plants were able to query the old system to bring data into spreadsheets for reports, analysis, etc.
Now the place is jammed to the hilt with linked spreadsheets - people do their "table joins" with linked cells and Excel VLookups (yuk). This is because the "powers that be" still demand that these reports, analysis, etc. be done.

I am trying to use SQL-DMO to create a table join between one of these Excel Data pulls and a MS SQL Server table in Excel so that I can join without VLookup. IS SQL-DMO the right way to go?

Has anyone done this? I think I am close, but I don't know how to use the SQL-DMO attached Excel table object I've created in a join. I can't see the object in MS Query. I am not adverse to doing the whole thing in VBA...

Here is another question. Most of these Data pulls using the "tool" (ball and chain, boat anchor) are done once a day or once a week. Would a better strategy be to create MS SQL server Tables that are dropped and re-written when the data is pulled into Excel? This would mean that the report worksheet does not have to import the Excel Data pull sheet to MS SQL when it updates its query.