Duckstabber,
As I am typing this the arbitrage is still there. I will never argue with those betting on these arbitrages either. Not doing it simply means throwing away money especially when it involves two books that do pay. Pinnacle leaves me stone cold, as they will change the price (with me) to 1.95 on Haka after a US$500 bet, the maximum, so if you do put US$500 on Jazz with Pointbet too, you will make a guaranteed US$25 on that match. Roughly 2.5% on total investment.
Pinnacle made similar moves on my US$3000 NBA bets. I then read that some books copy Pinnacle's lines. Which books? If those books take bigger sized bets (hard to imagine), will there not be any line manipulation going on?