Not allowed by the FA.
If you were super cynical about it you'd suggest they're not actually interested in stopping ref abuse because they make masses of money out of fines etc.
The technology will confirm if Lovren is in an offside position but that in itself isn't an offence, only the referee can decide that i.e. if he's interfering etc.
Nobody screwed it up as such. We identify targets well in advance at which point he qualified with ease. He then played (about 45mins) in a lower division which immediately made him ineligible. It's a shit system.