Seems it's spin stabilised to apogee.
Then a thruster of some sort "despins" it.
(
smellysamlyingcable Seaman on, Mon 23 Feb 2015, 14:12,
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^This
although my entire knowledge of rocket science is gleaned from Kerbal Space Program
(
H.B.Mupps, Mon 23 Feb 2015, 14:38,
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