(Reuters) -Short-seller Hindenburg Research warned on Monday that Elon Musk’s $44-billion offer to take Twitter Inc private could get repriced lower if the Silicon Valley billionaire walked away from the deal. “Musk holds all the cards here,” Hindenburg, which has a short position on Twitter, said in a report. “If Elon Musk’s bid for Twitter disappeared tomorrow, Twitter’s equity would fall by 50% from current levels. Consequently, we see a significant risk that the deal gets repriced lower.” Shares of the social media platform were down as much as 4% amid a broader market decline and touched …