No, you can not. The rule is that you can only play 1 card of each type per step or per check. Swipe, even when only played to reduce the difficulty of a check, is played during the check. So you could not play another Spell on the same check.
RotR Ruelbook p10 wrote:
Each player may play no more than 1 card of each type during each step.
RotR Rulebook p11 wrote:
Remember that each player may not play more than 1 card of each type or activate any 1 power more than once during each check.