On IRC one guy who said that he put that 50 BTC wall at 22k BTC...
he told that he wont let drive price below 22k...
thre was few dumps one even 100k BC he didn't removing it.
He told that he add new BTC before goes sleep and he added when BUY wall was eaten to 23BTC he added another BTC and
make it again 50BTC... he told that he can even put 250BTC if needed and he wont let sell cheap BC below 22k you can forget about it.
BTW he  was writing that he is developing something for BC - i guess he have his own inside info.

now 100BTC BUY wall in BC...
and what is funny this is not fake wall

before 50BTC was eaten and wall wasn't removed