I thought that was the solution you had in mind and had actually tried that many times before my previous post, but the problem I always had was another lemming would be right there just as the basher would finish so I would always end up losing one anyway.
Luck plays a HUGE part in completing that level, and as luck would have it, I just tried again and got lucky with not having a lemming right at the end as the basher finished, allowing me to finish the level in exactly that manner.
Now I've only got mayhem 21 left. If only I had three more bridges I could do it...
