I am always careful with the self proclainmed " Private incident investigators " theiy are paid by someone ( generally the Victim's famillies , not sure who pays this guy , but he ain't working for free surely ), with an agenda. He might have a point, but his speculations are as good as the BEA.
I am not an Airbus pilot nor a Airbus sofware engineer , even less an aircraft painter at EAS, but trying to stall any aeroplane while on base leg to see what happen does not sounds to me to be really a technical issue.