IMO, traders saw this as another opportunity to make some money. the algorithms were all over this move, since demand was high right up until the end of the R&R presentation. Unfortunately most of those shares sold into the strength were short sells (brokerages were providing liquidity to those wanting in), BUT after all the hooplah was over it was time to take it down and settle their accounts. Don't think for a minute that your brokerage is working for you. It is about making money for the house accounts and POET has been an easy mark for the last 6 years.
BTW IMHO the deep correction is almost over. I expect to hold support at the 200DMA (31).