It is not necessarily forbidden due to blood but rather it is forbidden simply because it was soaked. To even permit it for roasting requires further study, for the blood is considered as b’eyn.
 This makes the piece permitted. We should be lenient in this case for it to be roasted only and not cooked, and if there wasn't sixty it remains forbidden.
 Even if roasted and even if it wasn’t dirty, since it was soaked, it is forbidden.