It has been very hard to gauge bitcoin support and resistance for the past months. It is anybody's guess in volatile times. When the original post was made it was between $900 and $1200. We are now in June, just a bit over two months and it is anywhere between $2500 and $3000. Support and resistance can come in various forms and it is much more difficult to master than it first appears.
You seem pretty wrong to assume that there is support at 2500, because if there was it wouldn't have taken its whole existence to reach it. Bitcoin has become adapted so that its bought/sold based on the World's economy and news. I think there is more support for the range of bitcoin to be higher than any other commodity because its lifetime growth cannot be beat by any other electronically traded fund.