Easy fold right?

[NotMitch]

I feel bad posting this because I think it is very obvious, but after a long period of running bad I want to recheck my thinking. I fear in looking back at my recent I have made some weak tight plays.

Three handed at the end of a Stars 1 table SnG. I have T3500 and I'm in the SB. BB and Button both have T5000. Blinds at 100/200 button raises to T400, this could mean anything really, I look down and find 6 [img]/images/graemlins/club.gif[/img] 6 [img]/images/graemlins/spade.gif[/img] and I reraise to T1000. BB pushes all in behind me, and button calls. This is the easiest fold in the world right? Comments on my raise also welcome.