Fix GC issue in switch lacing strategy

This submission fixes defects
- MAGN-2319 With Run automatically ON Lacing - Cross Product does not take effect.
- MAGN2504: Warning for Dispose on changing lacing options.

These defects are because of two issues:
- GC, the input parameter is GCed when it is promoted to an array. 
- Replication guide is assigned to ssa variable, which causes incorrect delta computation.