Are you sure this worked correctly in 10.2.0.1? There's an old bug (4041790) where oo4o drops hints from updateable dynasets. The query actually gets issued twice when that's the case, are you checking both queries? The second one should be missing the hint.
Anyway, some workarounds are:
a) open the dynaset in read-only mode
b) create a view with the hint and select from that instead.