Generally it's not the R/S itself that tanks the stock, it's the subsequent dilution. Most pinks that R/S do it because they're bumping up against their authorized O/S maximum, so the do a reverse split without reducing authorized O/S. Boom, more room for capital raising through share issuance. Since the value of the company doesn't fundamentally change, pps has to go down as O/S goes back up. That's why N_B thinks the share price will go back down to what it was.
If a company is worth $1m with 100m shares outstanding at $0.01 each, if they reverse split 10:1, company is still worth $1m but now there are 10m shares outstanding at $0.1 each. As the company dilutes back up to 100m shares outstanding, price goes back down to .01 to keep the company worth $1m.
The HUGE difference here is that Virtra is not selling shares to raise money, AND they lowered authorized shares outstanding along with the R/S.
I know you know all this, just pointing it out to others.