The guy's a cheap charlatan. Why doesn't he take his medicine show to Saudi Arabia or Iran? I don't believe in 'harvesting souls for Christ', only sincere, lifelong efforts to live up to impossibly high Christian standards ('Be thou perfect, as your Father in Heaven is perfect') and praying for God's grace to bridge the gap. Instant salvation in a hypnotic setting, based on unverifiable healing testimonies is rubbish to me.
I say, let Hindus be Hindus and preserve their unique culture. And pray that the unenlightened elements like sutee and the caste system fall away over time.
Bash whoever you want, but remember the warning of Gamaliel: if this man is not of God, he will be gone in no time, but if he is of God, who are we to oppose him?