He's tackled straight legged with a high foot, you are always in trouble if that makes contact and the referee sees it. The handball is harsh, but his arm is up high so again is taking a big risk.
There can be no-one in football, bar maybe a few referees and administrators, who think that is the type of offence that the handball law is intended to penalise.
Especially galling when a tackle just as reckless and dangerous against Ipswich today isn't even penalised, a penalty far more blatant isn't given and they are knocked out by a clearly offside goal.
Very poor from Abbas Khan and I don't think Andy Haines has got many, if any, seasons ahead of him.