On the upcoming Season 14 finale of The Real Housewives of New Jersey, Margaret Josephspreviously said in a preview she will be “dropping some bombs” at the explosive finale dinner. Now, an insider spoke exclusively to OK! to reveal those “bombs” may not blow up as much as she hopes. “Marge’s ‘big bomb’ that she’s purporting is that Jackiehad spoken to Luis’ ex,” the source divulged. “Marge was convinced that this would create a wedge between Teresa and Jackie and cause their newfound friendship to fall apart.” Things didn’t go according to plan, as the insider explained, “Sadly for Marge, it …