Many years ago, we took a taxi from SCC to La Ceiba and did a long drift dive back to Scuba Club.
The following year, we decided to repeat our shore drift with a group of friends. As soon as we entered the water in front of Sol Caribe, I felt the current running the wrong way (to the south). We quickly surfaced and decided to dive on the airplane wreck in front of La Ceiba since we weren't going to be able to drift in the direction we needed to go. As we headed towards the airplane, the current stated to rip towards the south, very strong and very fast. Fearing that we would be swept under a cruise ship tied up to the pier, I signaled everyone to go to shore. We crawled, hand over hand, along the bottom to get out of the water. One of the people we were diving with called his wife at SCC and she came down to La Ceiba to pick us up and take us back to Scuba Club. By the time we got back to the hotel, the current had reversed again and was gently blowing in the normal direction.
On a couple of other occasions we've had extremely strong currents in front of SCC, with the current changing directions from north to south and back again in a few minutes. The one time I was in the water during such an occurance on a night dive, it was another crawl along the bottom to get out of the current.
For more than twenty years, we have spent three or more weeks a year at SCC. It's my experience that such strong, squirrely currents are rare.