removed to an other table

Why sometimes do players get removed to an other table? Once on poker 888 I was on first place and they removed me to an other player every hand and couldn t play any hand for 40 minutes. On pokerstars I got that problem sometimes, but not like that.

The poker sites shuffle the players around the table based on stack sizes to keep the game competitive ... that way the 4th place stack has an opportunity to double through the 1st place etc. instead of massively outchipping everyone else at the table