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We examine the tidal disruption event scenario to explain Sw 1644+57, apowerful and persistent X-ray source which suddenly became active as GRB110328A. The precise localization at the center of a z=0.35 galaxy argues foractivity of the central engine as the underlying cause. We look at thesuggestion by Bloom et al of the possibility of a tidal disruption event (TDE).We argue that Sw 1644+57 cannot be explained by the traditional TDE model inwhich the periastron distance is close to the tidal disruption radius - threeindependent lines of argument indicate the orbit must be deeply plunging orelse the powerful jet we are observing could not be produced. These argumentsstem from (i) comparing the early X-ray light curve to the expected theoreticalfallback rate, (ii) looking at the time of transition to disk-dominated decay,and (iii) considering the TDE rate. Due to the extreme excess in the tidalforce above that which would be required minimally to disrupt the star in adeeply plunging orbit at periastron, we suggest this scenario might be referredto more descriptively as a TOE (tidal obliteration event) rather than a TDE.

GRB 110328A/Swift J164449.3+573451: The Tidal Obliteration of a Deeply Plunging Star?