No one fully knows what happened yet -Hwayoung and the members of T-ara really grew close in the past months; whatever it was that happened, there most definitely is a reason for it. We just don't get to hear it.
Regardless, I have been a huge T-ara fan since the day of their debut and will remain a fan to the end -as for everyone who are saying "good bye" to being a T-ara "fan", looks like you were only supporters of Hwayoung, no matter what way you put it as. True T-ara fans would stand strong with the group and stay with them until the end -I honestly do not believe any member of T-ara could be a bully.
Need someone to blame/vent your anger out on? Go take it up with Kim Kwang Soo. He's the one making the decisions.