Nymphomaniac? EGOMANIAC?

Shia LeBeouf is acquiring some headlines today, not because of his new film NYMPHOMANIAC, but instead due to his weird behavior at a press conference in Berlin.. According to the reports of the event, he answered only one question before becoming angry and walking off the stage.  He apparently was thinner and was missing a tooth, reports say..

You can see the video of it here.. One report indicated that his co-stars were clapping, other reports say that Christian Slater and Uma Thurman looked "stunned"..   However, the video appears to show them clapping and smiling as LeBouf left in a huff..

His eerie comments made, as he walked out after gulping a large drink of water:

When the seagulls follow the trawler, it’s because they think sardines will be thrown into the sea. Thank you very much

 Rumors have been abounding online.. Is it drugs? Meth? Something else?
Or ego..?