Im familiar with 2 straddles from the button (Mississippi/Sleeper Straddles). Since based on your description SB acts first, this is probably a Missi straddle where action preflop starts with SB and ends on Button. Here the min-raise is $8.
UTG blind raises. A blind raise is a normal raise (except that UTG has not seen his cards), but it is not UTG's turn to act. Since UTG has acted out of turn, it would only be binding if action does not change when it reaches him. When SB raises to $14, UTG would have all options left.
Depending on the house ruling, UTG may be forced to keep his $10 in the pot. He may then call the extra $4, or re-raise to at least $24, or fold and forfeit his $10.