Hi GarrettC,
In my time in the SBC, there has been varying dislike of dancing from church to church. Those who dislike dancing (forbid in some cases) dislike it on the concept that it is less artful and more sexual in nature. Take the dirty dancing trend of the 80s to present. Also, the gyrations of Elvis provoked ideas that dancing is indecent. So, the primary concern is with dancing to pop, rock, R&B, etc. However, the SBC has taken it to an extreme and put a limit on all forms of dancing in their statements, and have not made any loopholes for ballet or other forms of dancing that are truly art.
My thoughts on dancing are that one should be modest and not turn it into a sexual display. This is more than 'intent' as often people are so immune to the sexualization of the culture that they do not perceive the sexuality of certain things. Grinding to some is not sexual, although it is based solely on this concept. Society has turned something of a perverse display into something acceptable. These types of things should be avoided. However, when it comes to things like moving to a beat to have fun or slow/close dancing in a modest way (think not-salsa or dirty dancing) is fine. It is when it turns to the point where the two need to get a room that dancing becomes problematic.
However, (note this is coming from a conservative SB member and student) the SBC has had a tendency to rely on tradition on a few things rather than on Scripture in somewhat of a legalistic way. The complete barring of all kinds dance is one of these instances. For instance, Psa 149, 2 Sam 6, and other passages show dancing in a good light. There are plenty of instances of dancing in the negative, such as the hedonistic dancing of the Israelites when Moses was on Mt Sinia, or when Herod's daughter danced before him and then asked for John the Baptist's head.
The bottom line is - when you dance can God be glorified or is your testimony being destroyed by your actions?
I hope this helps.
In Christ,
Dave