Glad to hear Splitter is OK and playing well. Despite some of the sentiments around here about him, Splitter got dealt a tough hand last season and never got a chance to really excel in the Spurs system. This next season should be a much better indicator of what we can expect from the big man....if he can stay healthy through camp, anyways.
As for the Free Throw woes, I'm sure Brazilians aren't going to appreciate him clanking all these now, but imo this is necessary to his development. His jump shot looked pretty busted before, and playing in the Spurs system, it would be extremely beneficial if he could develop a short-to-midrange jumper into his arsenal. That starts with correcting shot mechanics, and that all starts at the free-throw line.
When players look to fix their shot, the first thing they usually have to do is deconstruct and unlearn all their bad habits. This takes a while to do, and the results usually aren't pretty at first. Personally, I'm glad to hear Splitter is sticking to his new technique and not reverting to his old form, despite the benefits not being there yet, because they should appear down the road.