So yesterday evening (15/7/2016) I put my newly acquired male Theraphosa blondi into the enclosure of my recently molted young adult female and about 15 minutes of this ensued:
Not visible in the video but I have witnessed a few insertions I think. Finally, the female had enough and the male backed into his enclosure without incident.
I will try again after a fresh sperm web and feeding. But fingers crossed!