Mortug

Question: When the suitcase enters the water and starts to float away, I thought I saw an arm (from about the elbow) and hand outstretched toward the water and suitcase, as if someone was laying down and mostly hidden behind some of the building debris. I noticed during both viewings I attended, but it is fast. I thought maybe it was a crewarm, then later thought it might have belonged to Mr. White. Or maybe just some bad guy trying to grab it without success. Or maybe it wasn't an arm at all.