Minor data extraction changes in removal_stats method -- was having issu...

...es with the prior logic in certain environments / rubies.

TBH it this probably isn't really needed but this is likely a more solid approach regardless;  in any case, I was mainly seeing errors under Ruby 2 -- but also is possible it was gem version conflicts.  

In any case, if things were already working for you then this code should continue to have things work -- if you were experiencing issues with the method, this should also address that I hope.  :-)