I think that's a good indicator of the manipulating going on. Drive the price down through the day, stock up on bargain pricing at the end of the day. That last buy represented about $22K in investment.
I think that after pushing the price down, the bad guys are stocking up, looking to push the price up again, using the speculation of the Thursday hearing to fuel the trades. Of course, after they clear their profits, they'll want to short and push the stock down.
Sadly, MAXD is very vulnerable to this stuff right now.