No. The issue is the emergency spillway to the left of the broken regular spillway. It's hard to detect, since it just appears as a large area of shrubs and foliage. If the top goes, the top 30 feet of the entire lake will cascade into the river below. That hasn't happened as yet, but officials consider the risk high enough to order the evacuation.
The weir at the top of the “emergency spillway” is on drilled piers, so it isn’t going anywhere, but there is a void under the southerly end of it that could threaten the head gates of the main spillway.
If the hole enlarges more water will flow in uncontrollable areas.