Borgata N/L Rule question

[poker327]

I was sitting in a 2/5 NL game, racked up and went to dinner. I went back half an hour later and the only open seat I found was at the table I was just at. I bought in for less than I had when I left, and a nit objected, saying I couldn't play at the table because I "took money off the table." The floor was going to be called over. I did not want to start a fight so I moved to a different table without hearing a floor explanation.

I am curious if the Borgata has a rule about this. It was not my intention to rathole. The table was good and I would have liked to keep my stack in place (I know I could have but I don't like to leave a lot of chips unattended for a long period of time). I wonder if I could have asked the floor if I could buy in for what I had left taken from the table, but I know that would have opened a new can of worms (the player claimed I had more than I really did).