Thanks, I'm familiar with the idea of rolling a prime forward and know that the bots can't seem to get these obvious positions right, but I've never heard it called a "snake prime" before.
For those who might not be aware of how the bots misplay rolling a prime forward, here's XG 3-ply. Higher settings only make it worse.

              
 
              
 | | White is Player 2
score: 0 pip: 41 | Unlimited Game Jacoby Beaver | pip: 257 score: 0
Blue is Player 1 | |
| XGID=----a---------BBBBCBAA-fh-:0:0:1:54:0:0:3:0:10 |
| Blue to play 54 |
| 1. | 3-ply | 18/13 17/13 | eq: +0.479 |
| Player: Opponent: | 74.06% (G:0.90% B:0.00%) 25.94% (G:17.51% B:0.10%) | |
|
| 2. | 3-ply | 21/17 18/13 | eq: +0.324 (-0.155) |
| Player: Opponent: | 69.26% (G:0.53% B:0.00%) 30.74% (G:21.67% B:0.14%) | |
|
| 3. | 3-ply | 17/12 16/12 | eq: +0.313 (-0.166) |
| Player: Opponent: | 67.34% (G:0.74% B:0.00%) 32.66% (G:23.48% B:0.15%) | |
|
| 4. | 3-ply | 17/8 | eq: +0.135 (-0.344) |
| Player: Opponent: | 64.46% (G:0.61% B:0.00%) 35.54% (G:28.87% B:0.24%) | |
|
| 5. | 3-ply | 19/10 | eq: +0.063 (-0.416) |
| Player: Opponent: | 62.42% (G:0.36% B:0.00%) 37.58% (G:30.79% B:0.13%) | |
|
eXtreme Gammon Version: 2.10